C # Email sending method summary

The "System. Net. Mail" provided in. Net FrameWork 2.0 can be easily implemented. This article lists three methods for sending:
1. Use Localhost;
2. Use normal SMTP;
3. SMTP over SSL;

For example:

1. Use LocalHost

Public void SendMailLocalhost ()

{

System. Net. Mail. MailMessage msg = new System. Net. Mail. MailMessage ();

Msg. To. Add ("a@a.com ");

Msg. To. Add ("B @ B .com ");

/*

* Msg. To. Add ("B @ B .com ");

* Msg. To. Add ("B @ B .com ");

* Msg. To. Add ("B @ B .com"); can be sent To multiple people

*/

Msg. CC. Add ("c@c.com ");

/*

* Msg. CC. Add ("c@c.com ");

* Msg. CC. Add ("c@c.com"); can be copied to multiple people

*/

Msg. From = new MailAddress ("a@a.com", "AlphaWu", System. Text. Encoding. UTF8 );

/* The preceding three parameters are respectively the sender address (which can be written as needed), sender name, and encoding */

Msg. Subject = "this is a test email"; // mail title

Msg. SubjectEncoding = System. Text. Encoding. UTF8; // email title Encoding

Msg. Body = "Mail content"; // mail content

Msg. BodyEncoding = System. Text. Encoding. UTF8; // email Content Encoding

Msg. IsBodyHtml = false; // whether the email is an HTML email.

Msg. Priority = MailPriority. High; // mail Priority

SmtpClient client = new SmtpClient ();

Client. Host = "localhost ";

Object userState = msg;

Try

{

Client. SendAsync (msg, userState );

// You can simply use client. Send (msg );

MessageBox. Show ("sent successfully ");

}

Catch (System. Net. Mail. SmtpException ex)

{

MessageBox. Show (ex. Message, "email sending error ");

}

}

2. Use normal SMTP

Public void SendMailUseZj ()

{

System. Net. Mail. MailMessage msg = new System. Net. Mail. MailMessage ();

Msg. To. Add ("a@a.com ");

Msg. To. Add ("B @ B .com ");

/*

* Msg. To. Add ("B @ B .com ");

* Msg. To. Add ("B @ B .com ");

* Msg. To. Add ("B @ B .com"); can be sent To multiple people

*/

Msg. CC. Add ("c@c.com ");

/*

* Msg. CC. Add ("c@c.com ");

* Msg. CC. Add ("c@c.com"); can be copied to multiple people

*/

Msg. From = new MailAddress ("a@a.com", "AlphaWu", System. Text. Encoding. UTF8 );

/* The preceding three parameters are respectively the sender address (which can be written as needed), sender name, and encoding */

Msg. Subject = "this is a test email"; // mail title

Msg. SubjectEncoding = System. Text. Encoding. UTF8; // email title Encoding

Msg. Body = "Mail content"; // mail content

Msg. BodyEncoding = System. Text. Encoding. UTF8; // email Content Encoding

Msg. IsBodyHtml = false; // whether the email is an HTML email.

Msg. Priority = MailPriority. High; // mail Priority

SmtpClient client = new SmtpClient ();

Client. Credentials = new System. Net. NetworkCredential ("username@zj.com", "userpass ");

// The email address and password registered at zj.com

Client. Host = "smtp.zj.com ";

Object userState = msg;

Try

{

Client. SendAsync (msg, userState );

// You can simply use client. Send (msg );

MessageBox. Show ("sent successfully ");

}

Catch (System. Net. Mail. SmtpException ex)

{

MessageBox. Show (ex. Message, "email sending error ");

}

}

The above method is not applicable to all SMTP, and zj.com can be used after testing, but smtp.163.com cannot.

3. SMTP over SSL

Public void SendMailUseGmail ()

{

System. Net. Mail. MailMessage msg = new System. Net. Mail. MailMessage ();

Msg. To. Add ("a@a.com ");

Msg. To. Add ("B @ B .com ");

/*

* Msg. To. Add ("B @ B .com ");

* Msg. To. Add ("B @ B .com ");

* Msg. To. Add ("B @ B .com"); can be sent To multiple people

*/

Msg. CC. Add ("c@c.com ");

/*

* Msg. CC. Add ("c@c.com ");

* Msg. CC. Add ("c@c.com"); can be copied to multiple people

*/

Msg. From = new MailAddress ("a@a.com", "AlphaWu", System. Text. Encoding. UTF8 );

/* The preceding three parameters are respectively the sender address (which can be written as needed), sender name, and encoding */

Msg. Subject = "this is a test email"; // mail title

Msg. SubjectEncoding = System. Text. Encoding. UTF8; // email title Encoding

Msg. Body = "Mail content"; // mail content

Msg. BodyEncoding = System. Text. Encoding. UTF8; // email Content Encoding

Msg. IsBodyHtml = false; // whether the email is an HTML email.

Msg. Priority = MailPriority. High; // mail Priority

SmtpClient client = new SmtpClient ();

Client. Credentials = new System. Net. NetworkCredential ("username@gmail.com", "password ");

// Write your GMail email address and password.

Client. Port = 587; // The Port used by Gmail

Client. Host = "smtp.gmail.com ";

Client. EnableSsl = true; // encrypted by ssl

Object userState = msg;

Try

{

Client. SendAsync (msg, userState );

// You can simply use client. Send (msg );

MessageBox. Show ("sent successfully ");

}

Catch (System. Net. Mail. SmtpException ex)

{

MessageBox. Show (ex. Message, "email sending error ");

}

}