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 ");

}

}

Using Gmail to send emails, the success rate is extremely high, and almost all emails can be sent. It is recommended.

Http://www.codeproject.com/useritems/SendMailUsingGmailAccount.asp