How to Send Email Using Telnet:
Open CMD
1. Type telnet server.com 25 (where “server.com” is the name of the smtp (outgoing) server of your email provide
2.Type HELO server.com
3.Type MAIL FROM:User@server.com.
4.Type RCPT TO:Whatever@server.com
To write the message, type DATA and press Enter. A.On the first line type SUBJECT: yoursubject and press Enter twice.
B.Continue typing your message.
C.Put a single period (.) on a line by itself and press Enter to send your message. The server should say ‘Message accepted for delivery’. (Or it says 250 OK id=a long id)
5.Type QUIT to exit Telnet
