Question

我使用此代码从雅虎发送电子邮件。

  string smtpAddress = "smtp.mail.yahoo.com";
        int portNumber = 587;
        bool enableSSL = true;

        string emailFrom = "mitshel@yahoo.com";
        string password = "xxxxxx!";
        string emailTo = "dimitris.chris@yahoo.com"; 
        string subject = "Hello";
        string body = "Hello, I'm just writing this to say Hi!";

        using (MailMessage mail = new MailMessage())
        {
            mail.From = new MailAddress(emailFrom);
            mail.To.Add(emailTo);
            mail.Subject = subject;
            mail.Body = body;
            mail.IsBodyHtml = true;
            // Can set to false, if you are sending pure text.


            using (SmtpClient smtp = new SmtpClient(smtpAddress, portNumber))
            {
                smtp.Credentials = new NetworkCredential(emailFrom, password);
                smtp.EnableSsl = enableSSL;
                smtp.Send(mail);

但是，如果我想添加更多电子邮件地址呢？我试过这个，但是我收到了一个错误：

 string emailTo = "mitsoshellas@yahoo.com" ,"dimitris.christoforidis@hotmail.com" ;

Answer 1

    string smtpAddress = "smtp.mail.yahoo.com";
    int portNumber = 587;
    bool enableSSL = true;

    string emailFrom = "mitshel@yahoo.com";
    string password = "xxxxxx!";
    List<string> emailToList = new List<string>;
    emailToList.Add("dimitris.chris@yahoo.com");
    //add as many other as you like 
    string subject = "Hello";
    string body = "Hello, I'm just writing this to say Hi!";

    using (MailMessage mail = new MailMessage())
    {
        mail.From = new MailAddress(emailFrom);
        foreach(string recipient in emailToList){
            mail.To.Add(recipient);
        }
        mail.Subject = subject;
        mail.Body = body;
        mail.IsBodyHtml = true;
        // Can set to false, if you are sending pure text.


        using (SmtpClient smtp = new SmtpClient(smtpAddress, portNumber))
        {
            smtp.Credentials = new NetworkCredential(emailFrom, password);
            smtp.EnableSsl = enableSSL;
            smtp.Send(mail);
         }

或

    string smtpAddress = "smtp.mail.yahoo.com";
    int portNumber = 587;
    bool enableSSL = true;

    string emailFrom = "mitshel@yahoo.com";
    string password = "xxxxxx!";
    List<string> emailToList = new List<string>;
    emailToList.Add("dimitris.chris@yahoo.com");
    //add as many other as you like 
    string subject = "Hello";
    string body = "Hello, I'm just writing this to say Hi!";
    foreach(string recipient in emailToList){
    using (MailMessage mail = new MailMessage())
    {
        mail.From = new MailAddress(emailFrom);
        mail.To.Add(recipient);

        mail.Subject = subject;
        mail.Body = body;
        mail.IsBodyHtml = true;
        // Can set to false, if you are sending pure text.


        using (SmtpClient smtp = new SmtpClient(smtpAddress, portNumber))
        {
            smtp.Credentials = new NetworkCredential(emailFrom, password);
            smtp.EnableSsl = enableSSL;
            smtp.Send(mail);
         }
}

Answer 2

我假设你有一个包含多个电子邮件地址的字符串，用逗号分隔，然后用空格分隔，例如

string emailTo = "someEmail@email.com, someEmail2@email.com, someEmail3@email.com";

您需要将emailTo分隔为字符串集合。为此，您可以使用以下内容：

// Separate the emailTo string into a list of email addresses
List<string> emailAddresses = new List<string>();

    int startingIndex = 0;
    while (startingIndex < emailTo.Length)
    {
        int commaIndex = emailTo.IndexOf(",", i);
        if (commaIndex != -1)
        {
            //Extract the email address
            string emailAddress = emailTo.Substring(startingIndex, commaIndex - startingIndex);

            // Remove the space following the comma
            if (emailAddress.Substring(0, 1) == " ")
            {
                emailAddress = emailAddress.Substring(1, emailAddress.Length - 1);
            }
            i = startingIndex + 1;
            result.Add(emaiAddress);
        }
    }

// Add each email address to the message's recipients
foreach(string emailAddress in emailAddresses)
{
    mail.To.Add(emailAddress);
}

此方法的好处是您不必手动解析电子邮件地址，并在您拥有一个emailTo字符串时自行将其添加到收件人列表中包含许多电子邮件地址。

将Yahoo电子邮件发送到多个地址

2 个答案: