Open your terminal. Now, connect with telnet using the following command: telnet smtp.domain.com 25 Type ehlo example.com. Some servers also accept helo in place of ehlo. ehlo Type mail from: username@example.com: mail from: username@domain.com Type rcpt to: user@hotmail.com, user2@yahoo.com (replace with your actual recipient name): rcpt to: user@hotmail.com, user@yahoo.com To write the message – type data, followed by your subject and message. To end the message, put a period on a line by itself and press enter: data Subject: My Telnet Test Email Hello, This is an email sent by using the telnet command. Your friend, Me . Type quit… Read More »How to send email using telnet