我使用以下代码,它只发送一封电子邮件 - 我必须将电子邮件发送到多个地址。
我要使用多封电子邮件:
string connectionString = ConfigurationManager.ConnectionStrings["email_data"].ConnectionString;
OleDbConnection con100 = new OleDbConnection(connectionString);
OleDbCommand cmd100 = new OleDbCommand("select top 3 emails from bulk_tbl", con100);
OleDbDataAdapter da100 = new OleDbDataAdapter(cmd100);
DataSet ds100 = new DataSet();
da100.Fill(ds100);
for (int i = 0; i < ds100.Tables[0].Rows.Count; i++)
//try
{
string all_emails = ds100.Tables[0].Rows[i][0].ToString();
{
string allmail = all_emails + ";";
Session.Add("ad_emails",allmail);
Response.Write(Session["ad_emails"]);
send_mail();
}
}
并发送我使用的电子邮件:
string sendto = Session["ad_emails"].ToString();
MailMessage message = new MailMessage("info@abc.com", sendto, "subject", "body");
SmtpClient emailClient = new SmtpClient("mail.smtp.com");
System.Net.NetworkCredential SMTPUserInfo = new System.Net.NetworkCredential("abc", "abc");
emailClient.UseDefaultCredentials = true;
emailClient.Credentials = SMTPUserInfo;
emailClient.Send(message);
答案 0 :(得分:60)
问题是,当只需要一个表示单个地址的字符串时,您将提供由分号分隔的地址列表到MailMessage
构造函数:
包含电子邮件收件人地址的字符串。
或可能是以逗号分隔的列表(见下文)。
要指定多个地址,您需要使用To
MailAddressCollection
属性,但这些页面上的示例并未清楚地显示:
message.To.Add("one@example.com, two@example.com"));
要添加到MailAddressCollection的电子邮件地址。必须使用逗号字符(“,”)分隔多个电子邮件地址。
因此,使用逗号分隔列表创建MailMessage
应该有效。
答案 1 :(得分:8)
这对我有用。 (收件人是一个字符串数组)
//Fuse all Receivers
var allRecipients = String.Join(",", recipients);
//Create new mail
var mail = new MailMessage(sender, allRecipients, subject, body);
//Create new SmtpClient
var smtpClient = new SmtpClient(hostname, port);
//Try Sending The mail
try
{
smtpClient.Send(mail);
}
catch (Exception ex)
{
Log.Error(String.Format("MailAppointment: Could Not Send Mail. Error = {0}",ex), this);
return false;
}
答案 2 :(得分:6)
此函数验证以逗号分隔或以分号分隔的电子邮件地址列表:
public static bool IsValidEmailString(string emailAddresses)
{
try
{
var addresses = emailAddresses.Split(',', ';')
.Where(a => !string.IsNullOrWhiteSpace(a))
.ToArray();
var reformattedAddresses = string.Join(",", addresses);
var dummyMessage = new System.Net.Mail.MailMessage();
dummyMessage.To.Add(reformattedAddresses);
return true;
}
catch
{
return false;
}
}
答案 3 :(得分:4)
要发送给多个收件人,我使用逗号设置收件人字符串作为我的分隔符。
string recipient = "foo@bar.com,foo2@bar.com,foo3@bar.com";
然后将收件人添加到MailMessage
对象:
string[] emailTo = recipient.Split(',');
for (int i = 0; i < emailTo.GetLength(0); i++)
mailMessageObject.To.Add(emailTo[i]);
答案 4 :(得分:0)
此代码用于发送to,bcc和cc
的多个邮件MailMessage email = new MailMessage();
Attachment a = new Attachment(attach);
email.From = new MailAddress(from);//De
string[] Direcciones;
char[] deliminadores = { ';' };
//Seleccion de direcciones para el parametro to
Direcciones = to.Split(deliminadores);
foreach (string d in Direcciones)
email.To.Add(new MailAddress(d));//Para
//Seleccion de direcciones para el parametro CC
Direcciones = CC.Split(deliminadores);
foreach (string d in Direcciones)
email.CC.Add(new MailAddress(d));
//Seleccion de direcciones para el parametro Bcc
Direcciones = Bcc.Split(deliminadores);
foreach (string d in Direcciones)
enter code here`email.Bcc.Add(new MailAddress(d));
答案 5 :(得分:0)
您还可以通过MailMessage.To.Add()
comma separated list of valid RFC 822 e-mail addresses:
Nathaniel Borenstein <nsb@bellcore.com>, Ned Freed <ned@innosoft.com>
所以代码是:
message.To.Add("Nathaniel Borenstein <nsb@bellcore.com>, Ned Freed <ned@innosoft.com>");
注意:任何已发布到公共领域的代码。无需归属。