使用JavaMail API在Android中发送电子邮件，而不使用默认/内置应用程序

Question

我正在尝试在Android中创建邮件发送应用程序。

如果我使用：

Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);

这将启动内置的Android应用程序;我正在尝试使用此应用程序直接点击不带按钮发送邮件。

Answer 1

使用Gmail身份验证使用JavaMail API在Android中发送电子邮件。

创建示例项目的步骤：

<强> MailSenderActivity.java：

public class MailSenderActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        final Button send = (Button) this.findViewById(R.id.send);
        send.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {
                try {   
                    GMailSender sender = new GMailSender("username@gmail.com", "password");
                    sender.sendMail("This is Subject",   
                            "This is Body",   
                            "user@gmail.com",   
                            "user@yahoo.com");   
                } catch (Exception e) {   
                    Log.e("SendMail", e.getMessage(), e);   
                } 

            }
        });

    }
}

<强> GMailSender.java：

public class GMailSender extends javax.mail.Authenticator {   
    private String mailhost = "smtp.gmail.com";   
    private String user;   
    private String password;   
    private Session session;   

    static {   
        Security.addProvider(new com.provider.JSSEProvider());   
    }  

    public GMailSender(String user, String password) {   
        this.user = user;   
        this.password = password;   

        Properties props = new Properties();   
        props.setProperty("mail.transport.protocol", "smtp");   
        props.setProperty("mail.host", mailhost);   
        props.put("mail.smtp.auth", "true");   
        props.put("mail.smtp.port", "465");   
        props.put("mail.smtp.socketFactory.port", "465");   
        props.put("mail.smtp.socketFactory.class",   
                "javax.net.ssl.SSLSocketFactory");   
        props.put("mail.smtp.socketFactory.fallback", "false");   
        props.setProperty("mail.smtp.quitwait", "false");   

        session = Session.getDefaultInstance(props, this);   
    }   

    protected PasswordAuthentication getPasswordAuthentication() {   
        return new PasswordAuthentication(user, password);   
    }   

    public synchronized void sendMail(String subject, String body, String sender, String recipients) throws Exception {   
        try{
        MimeMessage message = new MimeMessage(session);   
        DataHandler handler = new DataHandler(new ByteArrayDataSource(body.getBytes(), "text/plain"));   
        message.setSender(new InternetAddress(sender));   
        message.setSubject(subject);   
        message.setDataHandler(handler);   
        if (recipients.indexOf(',') > 0)   
            message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(recipients));   
        else  
            message.setRecipient(Message.RecipientType.TO, new InternetAddress(recipients));   
        Transport.send(message);   
        }catch(Exception e){

        }
    }   

    public class ByteArrayDataSource implements DataSource {   
        private byte[] data;   
        private String type;   

        public ByteArrayDataSource(byte[] data, String type) {   
            super();   
            this.data = data;   
            this.type = type;   
        }   

        public ByteArrayDataSource(byte[] data) {   
            super();   
            this.data = data;   
        }   

        public void setType(String type) {   
            this.type = type;   
        }   

        public String getContentType() {   
            if (type == null)   
                return "application/octet-stream";   
            else  
                return type;   
        }   

        public InputStream getInputStream() throws IOException {   
            return new ByteArrayInputStream(data);   
        }   

        public String getName() {   
            return "ByteArrayDataSource";   
        }   

        public OutputStream getOutputStream() throws IOException {   
            throw new IOException("Not Supported");   
        }   
    }   
}  

<强> JSSEProvider.java：

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

/**
 * @author Alexander Y. Kleymenov
 * @version $Revision$
 */


import java.security.AccessController;
import java.security.Provider;

public final class JSSEProvider extends Provider {

    public JSSEProvider() {
        super("HarmonyJSSE", 1.0, "Harmony JSSE Provider");
        AccessController.doPrivileged(new java.security.PrivilegedAction<Void>() {
            public Void run() {
                put("SSLContext.TLS",
                        "org.apache.harmony.xnet.provider.jsse.SSLContextImpl");
                put("Alg.Alias.SSLContext.TLSv1", "TLS");
                put("KeyManagerFactory.X509",
                        "org.apache.harmony.xnet.provider.jsse.KeyManagerFactoryImpl");
                put("TrustManagerFactory.X509",
                        "org.apache.harmony.xnet.provider.jsse.TrustManagerFactoryImpl");
                return null;
            }
        });
    }
}

在您的Android项目的以下链接中添加3个罐子

• mail.jar
• activation.jar
• additional.jar

Click here - How to add External Jars

不要忘记在清单中添加此行：

<uses-permission android:name="android.permission.INTERNET" />

只需点击以下链接即可更改安全性较低的应用的帐户访问权限 https://www.google.com/settings/security/lesssecureapps

运行项目并检查收件人邮件帐户中的邮件。 干杯！

P.S。并且不要忘记你不能从android中的任何Activity做网络操作。 因此，建议使用AsyncTask或IntentService来避免主线程异常上的网络。

Jar文件：https://code.google.com/archive/p/javamail-android/

Answer 2

感谢您提供宝贵的信息。代码工作正常。我也可以通过添加以下代码来添加附件。

private Multipart _multipart; 
_multipart = new MimeMultipart(); 

public void addAttachment(String filename,String subject) throws Exception { 
    BodyPart messageBodyPart = new MimeBodyPart(); 
    DataSource source = new FileDataSource(filename); 
    messageBodyPart.setDataHandler(new DataHandler(source)); 
    messageBodyPart.setFileName(filename); 
    _multipart.addBodyPart(messageBodyPart);

    BodyPart messageBodyPart2 = new MimeBodyPart(); 
    messageBodyPart2.setText(subject); 

    _multipart.addBodyPart(messageBodyPart2); 
} 



message.setContent(_multipart);

Answer 3

  

无法连接到SMTP主机：   smtp.gmail.com，port：465

在清单中添加以下行：

<uses-permission android:name="android.permission.INTERNET" />

Answer 4

您可以使用JavaMail API处理电子邮件任务。 JavaMail API在JavaEE包中可用，其jar可供下载。遗憾的是，它不能直接在Android应用程序中使用，因为它使用了在Android中完全不兼容的AWT组件。

您可以在以下位置找到适用于JavaMail的Android端口： http://code.google.com/p/javamail-android/

将jar添加到您的应用程序并使用SMTP方法

Answer 5

为了帮助那些使用SDK目标获得网络主线程异常＆gt; 9。这是使用上面的droopie代码，但对任何代码都适用。

StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();

StrictMode.setThreadPolicy(policy); 

android.os.NetworkOnMainThreadException

您可以使用AsyncTask，如下所示

public void onClickMail(View view) {
    new SendEmailAsyncTask().execute();
}

class SendEmailAsyncTask extends AsyncTask <Void, Void, Boolean> {
    Mail m = new Mail("from@gmail.com", "my password");

    public SendEmailAsyncTask() {
        if (BuildConfig.DEBUG) Log.v(SendEmailAsyncTask.class.getName(), "SendEmailAsyncTask()");
        String[] toArr = { "to mail@gmail.com"};
        m.setTo(toArr);
        m.setFrom("from mail@gmail.com");
        m.setSubject("Email from Android");
        m.setBody("body.");
    }

    @Override
    protected Boolean doInBackground(Void... params) {
        if (BuildConfig.DEBUG) Log.v(SendEmailAsyncTask.class.getName(), "doInBackground()");
        try {
            m.send();
            return true;
        } catch (AuthenticationFailedException e) {
            Log.e(SendEmailAsyncTask.class.getName(), "Bad account details");
            e.printStackTrace();
            return false;
        } catch (MessagingException e) {
            Log.e(SendEmailAsyncTask.class.getName(), m.getTo(null) + "failed");
            e.printStackTrace();
            return false;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

Answer 6

SMTP

使用SMTP是一种方法，其他人已经指出了如何做到这一点。请注意，在执行此操作时，您完全绕过内置邮件应用程序，并且必须在代码中静态提供SMTP服务器的地址，该服务器的用户名和密码，或者从用户查询

HTTP

另一种方法涉及一个简单的服务器端脚本，如php，它接受一些URL参数并使用它们发送邮件。这样，您只需要从设备发出HTTP请求（内置库很容易），并且不需要在设备上存储SMTP登录数据。与直接使用SMTP相比，这是一个间接性，但因为它非常容易发出HTTP请求并从PHP发送邮件，所以它甚至可能比直接方式更简单。

邮件申请

如果邮件应从他已在手机上注册的用户默认邮件帐户发送，则您必须采取其他方法。如果您有足够的时间和经验，您可能需要查看Android电子邮件应用程序的源代码，看看它是否提供了一些无需用户交互即可发送邮件的入口点（我不知道，但也许有一个）。

也许您甚至找到了一种查询用户帐户详细信息的方法（因此您可以将它们用于SMTP），但我非常怀疑这是可能的，因为这将是一个巨大的安全风险，并且Android的构建相当安全。 / p>

Answer 7

使用演示的100％工作代码您也可以使用此答案发送多封电子邮件。

下载项目 HERE

第1步：下载邮件，激活，附加jar文件，并在android studio中添加项目libs文件夹。我添加了一个屏幕截图，请参阅下面的 Download link

使用Gmail登录（使用您的邮件）和开启切换按钮LINK

大多数人都忘记了这一步，我希望你不会。

第2步：完成此过程后。复制并将这些课程复制到您的项目中。

<强> GMail.java

import android.util.Log;

import java.io.UnsupportedEncodingException;
import java.util.List;
import java.util.Properties;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class GMail {

    final String emailPort = "587";// gmail's smtp port
    final String smtpAuth = "true";
    final String starttls = "true";
    final String emailHost = "smtp.gmail.com";


    String fromEmail;
    String fromPassword;
    List<String> toEmailList;
    String emailSubject;
    String emailBody;

    Properties emailProperties;
    Session mailSession;
    MimeMessage emailMessage;

    public GMail() {

    }

    public GMail(String fromEmail, String fromPassword,
            List<String> toEmailList, String emailSubject, String emailBody) {
        this.fromEmail = fromEmail;
        this.fromPassword = fromPassword;
        this.toEmailList = toEmailList;
        this.emailSubject = emailSubject;
        this.emailBody = emailBody;

        emailProperties = System.getProperties();
        emailProperties.put("mail.smtp.port", emailPort);
        emailProperties.put("mail.smtp.auth", smtpAuth);
        emailProperties.put("mail.smtp.starttls.enable", starttls);
        Log.i("GMail", "Mail server properties set.");
    }

    public MimeMessage createEmailMessage() throws AddressException,
            MessagingException, UnsupportedEncodingException {

        mailSession = Session.getDefaultInstance(emailProperties, null);
        emailMessage = new MimeMessage(mailSession);

        emailMessage.setFrom(new InternetAddress(fromEmail, fromEmail));
        for (String toEmail : toEmailList) {
            Log.i("GMail", "toEmail: " + toEmail);
            emailMessage.addRecipient(Message.RecipientType.TO,
                    new InternetAddress(toEmail));
        }

        emailMessage.setSubject(emailSubject);
        emailMessage.setContent(emailBody, "text/html");// for a html email
        // emailMessage.setText(emailBody);// for a text email
        Log.i("GMail", "Email Message created.");
        return emailMessage;
    }

    public void sendEmail() throws AddressException, MessagingException {

        Transport transport = mailSession.getTransport("smtp");
        transport.connect(emailHost, fromEmail, fromPassword);
        Log.i("GMail", "allrecipients: " + emailMessage.getAllRecipients());
        transport.sendMessage(emailMessage, emailMessage.getAllRecipients());
        transport.close();
        Log.i("GMail", "Email sent successfully.");
    }

}

<强> SendMailTask​​.java

import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.util.Log;

import java.util.List;

public class SendMailTask extends AsyncTask {

    private ProgressDialog statusDialog;
    private Activity sendMailActivity;

    public SendMailTask(Activity activity) {
        sendMailActivity = activity;

    }

    protected void onPreExecute() {
        statusDialog = new ProgressDialog(sendMailActivity);
        statusDialog.setMessage("Getting ready...");
        statusDialog.setIndeterminate(false);
        statusDialog.setCancelable(false);
        statusDialog.show();
    }

    @Override
    protected Object doInBackground(Object... args) {
        try {
            Log.i("SendMailTask", "About to instantiate GMail...");
            publishProgress("Processing input....");
            GMail androidEmail = new GMail(args[0].toString(),
                    args[1].toString(), (List) args[2], args[3].toString(),
                    args[4].toString());
            publishProgress("Preparing mail message....");
            androidEmail.createEmailMessage();
            publishProgress("Sending email....");
            androidEmail.sendEmail();
            publishProgress("Email Sent.");
            Log.i("SendMailTask", "Mail Sent.");
        } catch (Exception e) {
            publishProgress(e.getMessage());
            Log.e("SendMailTask", e.getMessage(), e);
        }
        return null;
    }

    @Override
    public void onProgressUpdate(Object... values) {
        statusDialog.setMessage(values[0].toString());

    }

    @Override
    public void onPostExecute(Object result) {
        statusDialog.dismiss();
    }

}

第3步： 现在您可以根据需要更改此类，也可以使用此类发送多个邮件。我提供xml和java文件。

<强> activity_mail.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingLeft="20dp"
    android:paddingRight="20dp"
    android:paddingTop="30dp">

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingTop="10dp"
        android:text="From Email" />

    <EditText
        android:id="@+id/editText1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#FFFFFF"
        android:cursorVisible="true"
        android:editable="true"
        android:ems="10"
        android:enabled="true"
        android:inputType="textEmailAddress"
        android:padding="5dp"
        android:textColor="#000000">

        <requestFocus />
    </EditText>

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingTop="10dp"
        android:text="Password (For from email)" />

    <EditText
        android:id="@+id/editText2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#FFFFFF"
        android:ems="10"
        android:inputType="textPassword"
        android:padding="5dp"
        android:textColor="#000000" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingTop="10dp"
        android:text="To Email" />

    <EditText
        android:id="@+id/editText3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#ffffff"
        android:ems="10"
        android:inputType="textEmailAddress"
        android:padding="5dp"
        android:textColor="#000000" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingTop="10dp"
        android:text="Subject" />

    <EditText
        android:id="@+id/editText4"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#ffffff"
        android:ems="10"
        android:padding="5dp"
        android:textColor="#000000" />

    <TextView
        android:id="@+id/textView5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingTop="10dp"
        android:text="Body" />

    <EditText
        android:id="@+id/editText5"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#ffffff"
        android:ems="10"
        android:inputType="textMultiLine"
        android:padding="35dp"
        android:textColor="#000000" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Send Email" />

</LinearLayout>

<强> SendMailActivity.java

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import java.util.Arrays;
import java.util.List;

public class SendMailActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final Button send = (Button) this.findViewById(R.id.button1);

        send.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {
                Log.i("SendMailActivity", "Send Button Clicked.");

                String fromEmail = ((TextView) findViewById(R.id.editText1))
                        .getText().toString();
                String fromPassword = ((TextView) findViewById(R.id.editText2))
                        .getText().toString();
                String toEmails = ((TextView) findViewById(R.id.editText3))
                        .getText().toString();
                List<String> toEmailList = Arrays.asList(toEmails
                        .split("\\s*,\\s*"));
                Log.i("SendMailActivity", "To List: " + toEmailList);
                String emailSubject = ((TextView) findViewById(R.id.editText4))
                        .getText().toString();
                String emailBody = ((TextView) findViewById(R.id.editText5))
                        .getText().toString();
                new SendMailTask(SendMailActivity.this).execute(fromEmail,
                        fromPassword, toEmailList, emailSubject, emailBody);
            }
        });
    }
}

注意不要忘记在AndroidManifest.xml文件中添加互联网权限

<强> <uses-permission android:name="android.permission.INTERNET"/>

希望它能有效，如果它不在下面评论。

Answer 8

这是一个alt版本，也适用于我并且有附件（已经在上面发布但完整版本与源链接不同，人们发布它们因为缺少数据而无法使其工作）

import java.util.Date; 
import java.util.Properties; 
import javax.activation.CommandMap; 
import javax.activation.DataHandler; 
import javax.activation.DataSource; 
import javax.activation.FileDataSource; 
import javax.activation.MailcapCommandMap; 
import javax.mail.BodyPart; 
import javax.mail.Multipart; 
import javax.mail.PasswordAuthentication; 
import javax.mail.Session; 
import javax.mail.Transport; 
import javax.mail.internet.InternetAddress; 
import javax.mail.internet.MimeBodyPart; 
import javax.mail.internet.MimeMessage; 
import javax.mail.internet.MimeMultipart; 


public class Mail extends javax.mail.Authenticator { 
  private String _user; 
  private String _pass; 

  private String[] _to; 
  private String _from; 

  private String _port; 
  private String _sport; 

  private String _host; 

  private String _subject; 
  private String _body; 

  private boolean _auth; 

  private boolean _debuggable; 

  private Multipart _multipart; 


  public Mail() { 
    _host = "smtp.gmail.com"; // default smtp server 
    _port = "465"; // default smtp port 
    _sport = "465"; // default socketfactory port 

    _user = ""; // username 
    _pass = ""; // password 
    _from = ""; // email sent from 
    _subject = ""; // email subject 
    _body = ""; // email body 

    _debuggable = false; // debug mode on or off - default off 
    _auth = true; // smtp authentication - default on 

    _multipart = new MimeMultipart(); 

    // There is something wrong with MailCap, javamail can not find a handler for the multipart/mixed part, so this bit needs to be added. 
    MailcapCommandMap mc = (MailcapCommandMap) CommandMap.getDefaultCommandMap(); 
    mc.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html"); 
    mc.addMailcap("text/xml;; x-java-content-handler=com.sun.mail.handlers.text_xml"); 
    mc.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain"); 
    mc.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed"); 
    mc.addMailcap("message/rfc822;; x-java-content-handler=com.sun.mail.handlers.message_rfc822"); 
    CommandMap.setDefaultCommandMap(mc); 
  } 

  public Mail(String user, String pass) { 
    this(); 

    _user = user; 
    _pass = pass; 
  } 

  public boolean send() throws Exception { 
    Properties props = _setProperties(); 

    if(!_user.equals("") && !_pass.equals("") && _to.length > 0 && !_from.equals("") && !_subject.equals("") && !_body.equals("")) { 
      Session session = Session.getInstance(props, this); 

      MimeMessage msg = new MimeMessage(session); 

      msg.setFrom(new InternetAddress(_from)); 

      InternetAddress[] addressTo = new InternetAddress[_to.length]; 
      for (int i = 0; i < _to.length; i++) { 
        addressTo[i] = new InternetAddress(_to[i]); 
      } 
        msg.setRecipients(MimeMessage.RecipientType.TO, addressTo); 

      msg.setSubject(_subject); 
      msg.setSentDate(new Date()); 

      // setup message body 
      BodyPart messageBodyPart = new MimeBodyPart(); 
      messageBodyPart.setText(_body); 
      _multipart.addBodyPart(messageBodyPart); 

      // Put parts in message 
      msg.setContent(_multipart); 

      // send email 
      Transport.send(msg); 

      return true; 
    } else { 
      return false; 
    } 
  } 

  public void addAttachment(String filename) throws Exception { 
    BodyPart messageBodyPart = new MimeBodyPart(); 
    DataSource source = new FileDataSource(filename); 
    messageBodyPart.setDataHandler(new DataHandler(source)); 
    messageBodyPart.setFileName(filename); 

    _multipart.addBodyPart(messageBodyPart); 
  } 

  @Override 
  public PasswordAuthentication getPasswordAuthentication() { 
    return new PasswordAuthentication(_user, _pass); 
  } 

  private Properties _setProperties() { 
    Properties props = new Properties(); 

    props.put("mail.smtp.host", _host); 

    if(_debuggable) { 
      props.put("mail.debug", "true"); 
    } 

    if(_auth) { 
      props.put("mail.smtp.auth", "true"); 
    } 

    props.put("mail.smtp.port", _port); 
    props.put("mail.smtp.socketFactory.port", _sport); 
    props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory"); 
    props.put("mail.smtp.socketFactory.fallback", "false"); 

    return props; 
  } 

  // the getters and setters 
  public String getBody() { 
    return _body; 
  } 

  public void setBody(String _body) { 
    this._body = _body; 
  }

  public void setTo(String[] toArr) {
      // TODO Auto-generated method stub
      this._to=toArr;
  }

  public void setFrom(String string) {
      // TODO Auto-generated method stub
      this._from=string;
  }

  public void setSubject(String string) {
      // TODO Auto-generated method stub
      this._subject=string;
  }  

  // more of the getters and setters ….. 
}

并在活动中调用它......

@Override 
public void onCreate(Bundle icicle) { 
  super.onCreate(icicle); 
  setContentView(R.layout.main); 

  Button addImage = (Button) findViewById(R.id.send_email); 
  addImage.setOnClickListener(new View.OnClickListener() { 
    public void onClick(View view) { 
      Mail m = new Mail("gmailusername@gmail.com", "password"); 

      String[] toArr = {"bla@bla.com", "lala@lala.com"}; 
      m.setTo(toArr); 
      m.setFrom("wooo@wooo.com"); 
      m.setSubject("This is an email sent using my Mail JavaMail wrapper from an Android device."); 
      m.setBody("Email body."); 

      try { 
        m.addAttachment("/sdcard/filelocation"); 

        if(m.send()) { 
          Toast.makeText(MailApp.this, "Email was sent successfully.", Toast.LENGTH_LONG).show(); 
        } else { 
          Toast.makeText(MailApp.this, "Email was not sent.", Toast.LENGTH_LONG).show(); 
        } 
      } catch(Exception e) { 
        //Toast.makeText(MailApp.this, "There was a problem sending the email.", Toast.LENGTH_LONG).show(); 
        Log.e("MailApp", "Could not send email", e); 
      } 
    } 
  }); 
} 

Answer 9

使用＆＃34; smtp.gmail.com＆＃34;作为默认的smtp服务器。

Google会强制您经常更改关联的电子邮件帐户密码，因为他们过于热心＆＃34;可疑活动＆＃34;策略。从本质上讲，它会在短时间内将来自不同国家/地区的重复smtp请求视为可疑活动＆＃34;。他们认为您（电子邮件帐户持有人）一次只能在一个国家/地区。

当谷歌系统检测到＆＃34;可疑活动＆＃34;在您更改密码之前，它会阻止更多电子邮件。由于您将密码硬编码到应用程序中，因此每次发生这种情况时都必须重新发布应用程序，这并不理想。这对我来说每周发生3次，我甚至将密码存储在另一台服务器上，并且每次google强制我更改密码时都会动态提取密码。

因此，我建议使用众多免费smtp提供商之一，而不是＆＃34; smtp.gmail.com＆＃34;避免这种安全问题。使用相同的代码，但更改＆＃34; smtp.gmail.com＆＃34;到你的新smtp转发主机。

Answer 10

  

GmailBackground是一个小型图书馆，可以在没有用户互动的情况下在后台发送电子邮件：

用法：

    BackgroundMail.newBuilder(this)
            .withUsername("username@gmail.com")
            .withPassword("password12345")
            .withMailto("toemail@gmail.com")
            .withType(BackgroundMail.TYPE_PLAIN)
            .withSubject("this is the subject")
            .withBody("this is the body")
            .withOnSuccessCallback(new BackgroundMail.OnSuccessCallback() {
                @Override
                public void onSuccess() {
                    //do some magic
                }
            })
            .withOnFailCallback(new BackgroundMail.OnFailCallback() {
                @Override
                public void onFail() {
                    //do some magic
                }
            })
            .send();

配置：

repositories {
    // ...
    maven { url "https://jitpack.io" }
 }
 dependencies {
            compile 'com.github.yesidlazaro:GmailBackground:1.2.0'
    }

权限：

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET"/>

对于附件，您需要设置READ_EXTERNAL_STORAGE权限：

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

Source

（我自己测试过）

Answer 11

编辑：JavaMail 1.5.5 claims to support Android，因此您不需要任何其他内容。

<击> 我已将最新的JavaMail（1.5.4）移植到Android。它可以在Maven Central中使用，只需将以下内容添加到build.gradle ~~

compile 'eu.ocathain.com.sun.mail:javax.mail:1.5.4'

然后，您可以关注官方tutorial。

源代码可在此处获取：https://bitbucket.org/artbristol/javamail-forked-android

<击>

Answer 12

我为其他需要帮助的人找到了一个更短的选择。代码是：

package com.example.mail;

import java.util.Properties;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class SendMailTLS {

    public static void main(String[] args) {

        final String username = "username@gmail.com";
        final String password = "password";

        Properties props = new Properties();
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.starttls.enable", "true");
        props.put("mail.smtp.host", "smtp.gmail.com");
        props.put("mail.smtp.port", "587");

        Session session = Session.getInstance(props,
          new javax.mail.Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("username", "password");
            }
          });

        try {

            Message message = new MimeMessage(session);
            message.setFrom(new InternetAddress("from-email@gmail.com"));
            message.setRecipients(Message.RecipientType.TO,
                InternetAddress.parse("to-email@gmail.com"));
            message.setSubject("Testing Subject");
            message.setText("Dear Mail Crawler,"
                + "\n\n No spam to my email, please!");

            Transport.send(message);

            System.out.println("Done");

        } catch (MessagingException e) {
            throw new RuntimeException(e);
        }
    }
}

来源：Sending Email via JavaMail API

希望这有助于！祝你好运！

Answer 13

那些得到ClassDefNotFoundError的人试图将这三个jar文件移动到你项目的lib文件夹中，它对我有用!!

Answer 14

用于发送带附件的邮件..

public class SendAttachment{
                    public static void main(String [] args){ 
             //to address
                    String to="abc@abc.com";//change accordingly
                    //from address
                    final String user="efg@efg.com";//change accordingly
                    final String password="password";//change accordingly 
                     MailcapCommandMap mc = (MailcapCommandMap) CommandMap.getDefaultCommandMap();
                   mc.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html");
                  mc.addMailcap("text/xml;; x-java-content-handler=com.sun.mail.handlers.text_xml");
                  mc.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain");
                  mc.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed");
                  mc.addMailcap("message/rfc822;; x-java-content-handler=com.sun.mail.handlers.message_rfc822");
                  CommandMap.setDefaultCommandMap(mc); 
                  //1) get the session object   
                  Properties properties = System.getProperties();
                  properties.put("mail.smtp.port", "465"); 
                  properties.put("mail.smtp.host", "smtp.gmail.com");
                    properties.put("mail.smtp.socketFactory.port", "465");
                    properties.put("mail.smtp.socketFactory.class",
                            "javax.net.ssl.SSLSocketFactory");
                    properties.put("mail.smtp.auth", "true");
                    properties.put("mail.smtp.port", "465");

                  Session session = Session.getDefaultInstance(properties,
                   new javax.mail.Authenticator() {
                   protected PasswordAuthentication getPasswordAuthentication() {
                   return new PasswordAuthentication(user,password);
                   }
                  });

                  //2) compose message   
                  try{ 
                    MimeMessage message = new MimeMessage(session);
                    message.setFrom(new InternetAddress(user));
                    message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));
                    message.setSubject("Hii"); 
                    //3) create MimeBodyPart object and set your message content    
                    BodyPart messageBodyPart1 = new MimeBodyPart();
                    messageBodyPart1.setText("How is This"); 
                    //4) create new MimeBodyPart object and set DataHandler object to this object    
                    MimeBodyPart messageBodyPart2 = new MimeBodyPart();
                //Location of file to be attached
                    String filename = Environment.getExternalStorageDirectory().getPath()+"/R2832.zip";//change accordingly
                    DataSource source = new FileDataSource(filename);
                    messageBodyPart2.setDataHandler(new DataHandler(source));
                    messageBodyPart2.setFileName("Hello"); 
                    //5) create Multipart object and add MimeBodyPart objects to this object    
                    Multipart multipart = new MimeMultipart();
                    multipart.addBodyPart(messageBodyPart1);
                    multipart.addBodyPart(messageBodyPart2); 
                    //6) set the multiplart object to the message object
                    message.setContent(multipart ); 
                    //7) send message 
                    Transport.send(message); 
                   System.out.println("MESSAGE SENT....");
                   }catch (MessagingException ex) {ex.printStackTrace();}
                  }
                }

Answer 15

我无法运行Vinayak B＆＃39的代码。最后我通过以下方式解决了这个问题：

1.使用此

2.Applied AsyncTask。

3.更改发件人Gmail帐户的安全问题。（更改为＆＃34;开启＆＃34;）this

Answer 16

你考虑过使用Apache Commons Net吗？从3.3开始，只需要一个罐子（您可以使用gradle或maven依赖它）并且您已经完成了：http://blog.dahanne.net/2013/06/17/sending-a-mail-in-java-and-android-with-apache-commons-net/

Answer 17

无需用户干预，您可以按如下方式发送：

1. 从客户端apk发送电子邮件。在这里mail.jar，activation.jar需要发送java电子邮件。如果添加这些jar，可能会增加APK大小。

2. 或者，您可以在服务器端代码中使用Web服务，该代码将使用相同的mail.jar和activation.jar来发送电子邮件。您可以通过asynctask调用Web服务并发送电子邮件。参考相同的链接。

（但是，您需要知道邮件帐户的凭据）

Answer 18

如果要求您保持jar库尽可能小，可以单独包含SMTP / POP3 / IMAP功能，以避免“dex中的方法太多”问题。

您可以从the javanet web page中选择想要的jar库，例如，mailapi.jar + imap.jar可以让您以IMAP协议访问icloud，hotmail邮件服务器。 （在additional.jar和activation.jar的帮助下）

Answer 19

其他答案中提供的所有代码都是正确的，并且工作正常，但有点混乱，所以我决定发布一个库（仍在开发中）以更简单的方式使用它： {{3 }}

您只需要创建一个MailSender，构建一个邮件并发送它（已经在后台使用AsyncTask进行处理）。

MailSender mailSender = new MailSender(email, password);

Mail.MailBuilder builder = new Mail.MailBuilder();
Mail mail = builder
    .setSender(senderMail)
    .addRecipient(new Recipient(recipient))
    .setText("Hello")
    .build();

mailSender.sendMail(mail);

您可以收到已发送电子邮件的通知，并且还支持不同的收件人类型（TO，CC和BCC），附件和HTML：

MailSender mailSender = new MailSender(email, password);

Mail.MailBuilder builder = new Mail.MailBuilder();
Mail mail = builder
    .setSender(senderMail)
    .addRecipient(new Recipient(recipient))
    .addRecipient(new Recipient(Recipient.TYPE.CC, recipientCC))
    .setText("Hello")
    .setHtml("<h1 style=\"color:red;\">Hello</h1>")
    .addAttachment(new Attachment(filePath, fileName))
    .build();

mailSender.sendMail(mail, new MailSender.OnMailSentListener() {

    @Override
    public void onSuccess() {
        // mail sent!
    }

    @Override
    public void onError(Exception error) {
        // something bad happened :(
    }
});

你可以通过Gradle或Maven获得它：

compile 'it.enricocandino:androidmail:1.0.0-SNAPSHOT'

如果您有任何问题，请告诉我！ ：）

Answer 20

我尝试使用@Vinayak B提交的代码。但是我收到错误说：没有smtp的提供者

我为此创建了一个新问题，其中包含更多信息HERE

毕竟我能够自己解决这个问题。我不得不使用其他mail.jar 我必须确保我的＆＃34; access for less secure apps＆＃34;被打开了。

我希望这可以帮助任何有同样问题的人。完成此操作后，这段代码也可以在谷歌眼镜上运行。

Answer 21

这里有很多解决方案。但是，我认为我们必须更改GMail的配置，以允许从不太安全的设备进行访问。转到下面的链接并启用它。它对我有用

https://myaccount.google.com/lesssecureapps?pli=1

Answer 22

 Add jar files mail.jar,activation.jar,additionnal.jar

 String sub="Thank you for your online registration" ; 
 Mail m = new Mail("emailid", "password"); 

 String[] toArr = {"ekkatrainfo@gmail.com",sEmailId};
 m.setFrom("ekkatrainfo@gmail.com"); 

     m.setTo(toArr);
     m.setSubject(sub);
    m.setBody(msg);



                     try{


                            if(m.send()) { 

                            } else { 

                            } 
                          } catch(Exception e) { 

                            Log.e("MailApp", "Could not send email", e); 
                          } 

  package com.example.ekktra;

   import java.util.Date;
   import java.util.Properties;

   import javax.activation.CommandMap;
   import javax.activation.DataHandler;
   import javax.activation.DataSource;
   import javax.activation.FileDataSource;
   import javax.activation.MailcapCommandMap;
   import javax.mail.BodyPart;
   import javax.mail.Multipart;
   import javax.mail.PasswordAuthentication;
   import javax.mail.Session;
   import javax.mail.Transport;
   import javax.mail.internet.InternetAddress;
   import javax.mail.internet.MimeBodyPart;
   import javax.mail.internet.MimeMessage;
   import javax.mail.internet.MimeMultipart;

   public class Mail extends javax.mail.Authenticator { 
     private String _user; 
     private String _pass; 

     private String[] _to; 

     private String _from; 

     private String _port; 
     private String _sport; 

     private String _host; 

     private String _subject; 
     private String _body; 

     private boolean _auth; 

     private boolean _debuggable; 

     private Multipart _multipart; 


   public Mail() { 
      _host = "smtp.gmail.com"; // default smtp server 
      _port = "465"; // default smtp port 
      _sport = "465"; // default socketfactory port 

      _user = ""; // username 
      _pass = ""; // password 
      _from = ""; // email sent from 
      _subject = ""; // email subject 
      _body = ""; // email body 

      _debuggable = false; // debug mode on or off - default off 
      _auth = true; // smtp authentication - default on 

      _multipart = new MimeMultipart(); 

      // There is something wrong with MailCap, javamail can not find a handler for the        multipart/mixed part, so this bit needs to be added. 
      MailcapCommandMap mc = (MailcapCommandMap) CommandMap.getDefaultCommandMap(); 
   mc.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html"); 
   mc.addMailcap("text/xml;; x-java-content-handler=com.sun.mail.handlers.text_xml"); 
   mc.addMailcap("text/plain;; x-java-content-  handler=com.sun.mail.handlers.text_plain"); 
   mc.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed"); 
   mc.addMailcap("message/rfc822;; x-java-content- handler=com.sun.mail.handlers.message_rfc822"); 
    CommandMap.setDefaultCommandMap(mc); 
   } 

 public Mail(String user, String pass) { 
  this(); 

  _user = user; 
   _pass = pass; 
 } 

public boolean send() throws Exception { 
   Properties props = _setProperties(); 

  if(!_user.equals("") && !_pass.equals("") && _to.length > 0 && !_from.equals("") &&   !_subject.equals("") /*&& !_body.equals("")*/) { 
    Session session = Session.getInstance(props, this); 

    MimeMessage msg = new MimeMessage(session); 

     msg.setFrom(new InternetAddress(_from)); 

    InternetAddress[] addressTo = new InternetAddress[_to.length]; 
     for (int i = 0; i < _to.length; i++) { 
      addressTo[i] = new InternetAddress(_to[i]); 
    } 
      msg.setRecipients(MimeMessage.RecipientType.TO, addressTo); 

    msg.setSubject(_subject); 
    msg.setSentDate(new Date()); 

  // setup message body 
  BodyPart messageBodyPart = new MimeBodyPart(); 
    messageBodyPart.setText(_body); 
    _multipart.addBodyPart(messageBodyPart); 

     // Put parts in message 
    msg.setContent(_multipart); 

    // send email 
    Transport.send(msg); 

    return true; 
   } else { 
     return false; 
   } 
  } 

   public void addAttachment(String filename) throws Exception { 
    BodyPart messageBodyPart = new MimeBodyPart(); 
    DataSource source = new FileDataSource(filename); 
      messageBodyPart.setDataHandler(new DataHandler(source)); 
    messageBodyPart.setFileName(filename); 

   _multipart.addBodyPart(messageBodyPart); 
 } 

  @Override 
  public PasswordAuthentication getPasswordAuthentication() { 
     return new PasswordAuthentication(_user, _pass); 
  } 

   private Properties _setProperties() { 
   Properties props = new Properties(); 

    props.put("mail.smtp.host", _host); 

  if(_debuggable) { 
    props.put("mail.debug", "true"); 
  } 

  if(_auth) { 
    props.put("mail.smtp.auth", "true"); 
   } 

    props.put("mail.smtp.port", _port); 
    props.put("mail.smtp.socketFactory.port", _sport); 
    props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory"); 
    props.put("mail.smtp.socketFactory.fallback", "false"); 

    return props; 
   } 

   // the getters and setters 
  public String getBody() { 
   return _body; 
 } 

 public void setBody(String _body) { 
  this._body = _body; 
 }

  public void setTo(String[] toArr) {
     // TODO Auto-generated method stub
    this._to=toArr;
 }

public void setFrom(String string) {
    // TODO Auto-generated method stub
    this._from=string;
}

 public void setSubject(String string) {
    // TODO Auto-generated method stub
    this._subject=string;
  }  


   }

Answer 23

通过Kotlin以编程方式发送电子邮件。

• 简单的电子邮件发送，而不是其他所有功能（如附件）。
• TLS始终处于启用状态
• 也只需要1个gradle电子邮件依赖项。

我还发现此电子邮件POP服务列表确实很有帮助：

https://support.office.com/en-gb/article/pop-and-imap-email-settings-for-outlook-8361e398-8af4-4e97-b147-6c6c4ac95353

使用方法：

    val auth = EmailService.UserPassAuthenticator("you@gmail.com", "yourPassword")
    val to = listOf(InternetAddress("to@email.com"))
    val from = InternetAddress("you@gmail.com")
    val email = EmailService.Email(auth, to, from, "Test Subject", "Hello Body World")
    val emailService = EmailService("smtp.gmail.com", 465)
    
    GlobalScope.launch { // or however you do background threads
        emailService.send(email)
    }

代码：

import java.util.*
import javax.mail.*
import javax.mail.internet.InternetAddress
import javax.mail.internet.MimeBodyPart
import javax.mail.internet.MimeMessage
import javax.mail.internet.MimeMultipart

class EmailService(private val server: String, private val port: Int) {

    data class Email(
        val auth: Authenticator,
        val toList: List<InternetAddress>,
        val from: Address,
        val subject: String,
        val body: String
    )

    class UserPassAuthenticator(private val username: String, private val password: String) : Authenticator() {
        override fun getPasswordAuthentication(): PasswordAuthentication {
            return PasswordAuthentication(username, password)
        }
    }

    fun send(email: Email) {
        val props = Properties()
        props["mail.smtp.auth"] = "true"
        props["mail.user"] = email.from
        props["mail.smtp.host"] = server
        props["mail.smtp.port"] = port
        props["mail.smtp.starttls.enable"] = "true"
        props["mail.smtp.ssl.trust"] = server
        props["mail.mime.charset"] = "UTF-8"
        val msg: Message = MimeMessage(Session.getDefaultInstance(props, email.auth))
        msg.setFrom(email.from)
        msg.sentDate = Calendar.getInstance().time
        msg.setRecipients(Message.RecipientType.TO, email.toList.toTypedArray())
//      msg.setRecipients(Message.RecipientType.CC, email.ccList.toTypedArray())
//      msg.setRecipients(Message.RecipientType.BCC, email.bccList.toTypedArray())
        msg.replyTo = arrayOf(email.from)

        msg.addHeader("X-Mailer", CLIENT_NAME)
        msg.addHeader("Precedence", "bulk")
        msg.subject = email.subject

        msg.setContent(MimeMultipart().apply {
            addBodyPart(MimeBodyPart().apply {
                setText(email.body, "iso-8859-1")
                //setContent(email.htmlBody, "text/html; charset=UTF-8")
            })
        })
        Transport.send(msg)
    }

    companion object {
        const val CLIENT_NAME = "Android StackOverflow programmatic email"
    }
}

等级：

dependencies {
    implementation 'com.sun.mail:android-mail:1.6.4'
    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.3"
}

AndroidManifest：

<uses-permission android:name="android.permission.INTERNET" />

Answer 24

对于那些希望在2020年将JavaMail与Kotlin结合使用的人：

首先：将这些依赖项添加到您的build.gradle文件中（正式的JavaMail Maven依赖项）

实现'com.sun.mail：android-mail：1.6.5'

实现'com.sun.mail：android-activation：1.6.5'

实现“ org.bouncycastle：bcmail-jdk15on：1.65”

实现“ org.jetbrains.kotlinx：kotlinx-coroutines-core：1.3.7”

实现“ org.jetbrains.kotlinx：kotlinx-coroutines-android：1.3.7”

BouncyCastle是出于安全原因。

第二：将这些权限添加到您的AndroidManifest.xml

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

第三：使用SMTP时，创建一个配置文件

object Config {
    const val EMAIL_FROM = "You_Sender_Email@email.com"
    const val PASS_FROM = "Your_Sender_Password"

    const val EMAIL_TO = "Your_Destination_Email@email.com"
}

第四：创建邮件对象

object Mailer {

init {
    Security.addProvider(BouncyCastleProvider())
}

private fun props(): Properties = Properties().also {
        // Smtp server
        it["mail.smtp.host"] = "smtp.gmail.com"
        // Change when necessary
        it["mail.smtp.auth"] = "true"
        it["mail.smtp.port"] = "465"
        // Easy and fast way to enable ssl in JavaMail
        it["mail.smtp.ssl.enable"] = true
    }

// Dont ever use "getDefaultInstance" like other examples do!
private fun session(emailFrom: String, emailPass: String): Session = Session.getInstance(props(), object : Authenticator() {
    override fun getPasswordAuthentication(): PasswordAuthentication {
        return PasswordAuthentication(emailFrom, emailPass)
    }
})

private fun builtMessage(firstName: String, surName: String): String {
    return """
            <b>Name:</b> $firstName  <br/>
            <b>Surname:</b> $surName <br/>
        """.trimIndent()
}

private fun builtSubject(issue: String, firstName: String, surName: String):String {
    return """
            $issue | $firstName, $surName
        """.trimIndent()
}

private fun sendMessageTo(emailFrom: String, session: Session, message: String, subject: String) {
    try {
        MimeMessage(session).let { mime ->
            mime.setFrom(InternetAddress(emailFrom))
            // Adding receiver
            mime.addRecipient(Message.RecipientType.TO, InternetAddress(Config.EMAIL_TO))
            // Adding subject
            mime.subject = subject
            // Adding message
            mime.setText(message)
            // Set Content of Message to Html if needed
            mime.setContent(message, "text/html")
            // send mail
            Transport.send(mime)
        }

    } catch (e: MessagingException) {
        Log.e("","") // Or use timber, it really doesn't matter
    }
}

fun sendMail(firstName: String, surName: String) {
        // Open a session
        val session = session(Config.EMAIL_FROM, Config.PASSWORD_FROM)

        // Create a message
        val message = builtMessage(firstName, surName)

        // Create subject
        val subject = builtSubject(firstName, surName)

        // Send Email
        CoroutineScope(Dispatchers.IO).launch { sendMessageTo(Config.EMAIL_FROM, session, message, subject) }
}

注意

• 如果您想以更安全的方式发送电子邮件（并且您想以更安全的方式！），请按照解决方案中的说明使用http（我可能会在此答案的后面添加它）
• 您必须正确检查用户电话是否可以访问互联网，否则应用程序将崩溃。
• 使用gmail时，请启用“安全性较低的应用程序”（当您启用了gmail的两个因素时，此功能将无效）https://myaccount.google.com/lesssecureapps?pli=1
• 某些积分属于：https://medium.com/@chetan.garg36/android-send-mails-not-intent-642d2a71d2ee（他使用RxJava作为其解决方案）

Answer 25

要添加附件，请不要忘记添加。

    //Button-Print:
    private void button5_Click(object sender, EventArgs e)
    {
       printPreviewDialog1.ShowDialog();
        i = 0;
     }

    //GlobalValue.
    int i = 0;

    //printDocument
    private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
    {
        e.Graphics.DrawString("\r\n\r\n"+ label14.Text + "\r\n" + label11.Text + "\t \t \t \t \t \t" + label6.Text, label11.Font, Brushes.Black, 50, 0);

        int height = 0;
        int width = 0;

        Pen p = new Pen(Brushes.Black,2.5f);

        //Column1
        #region userIDCol
        e.Graphics.FillRectangle(Brushes.DarkGray, new Rectangle(100, 100, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
        e.Graphics.DrawRectangle(p, new Rectangle(100, 100, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
        e.Graphics.DrawString(dataGridView1.Columns[0].HeaderText.ToString(), dataGridView1.Font, Brushes.Black, new Rectangle(100, 100, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
        #endregion

        //Column2
        #region loginTimeCol
        e.Graphics.FillRectangle(Brushes.DarkGray, new Rectangle(100 + dataGridView1.Columns[0].Width, 100, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
        e.Graphics.DrawRectangle(p, new Rectangle(100 + dataGridView1.Columns[0].Width, 100, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
        e.Graphics.DrawString(dataGridView1.Columns[1].HeaderText.ToString(), dataGridView1.Font, Brushes.Black, new Rectangle(100 + dataGridView1.Columns[0].Width, 100, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
        #endregion

        //Column3
        #region logoutTimeCol
        e.Graphics.FillRectangle(Brushes.DarkGray, new Rectangle(200 + dataGridView1.Columns[0].Width, 100, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
        e.Graphics.DrawRectangle(p, new Rectangle(200 + dataGridView1.Columns[0].Width, 100, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
        e.Graphics.DrawString(dataGridView1.Columns[2].HeaderText.ToString(), dataGridView1.Font, Brushes.Black, new Rectangle(200 + dataGridView1.Columns[0].Width, 100, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
        #endregion

        height = 100;

        while (i < dataGridView1.Rows.Count)
        {
            if(height > e.MarginBounds.Height)
            {
                height = 100;
                e.HasMorePages = true;
                return;
            }
            height += dataGridView1.Rows[0].Height;

            //Column1
            e.Graphics.DrawRectangle(p, new Rectangle(100, height, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
            e.Graphics.DrawString(dataGridView1.Rows[i].Cells[0].FormattedValue.ToString(), dataGridView1.Font, Brushes.Black, new Rectangle(100, height, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));

            //Column2
            e.Graphics.DrawRectangle(p, new Rectangle(100 + dataGridView1.Columns[0].Width, height, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
            e.Graphics.DrawString(dataGridView1.Rows[i].Cells[1].FormattedValue.ToString(), dataGridView1.Font, Brushes.Black, new Rectangle(100 + dataGridView1.Columns[0].Width, height, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));

            //Column3
            e.Graphics.DrawRectangle(p, new Rectangle(200 + dataGridView1.Columns[0].Width, height, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
            e.Graphics.DrawString(dataGridView1.Rows[i].Cells[2].FormattedValue.ToString(), dataGridView1.Font, Brushes.Black, new Rectangle(200 + dataGridView1.Columns[0].Width, height, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));

            i++;
        }
    }