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- Open Windows Command Prompt using Start -> Command Prompt or via Run -> CMD
- Telnet to the mail server by typing telnet 25
- Once connected, we must initiate the mail sending process queue. We start this with helo
- The server will reply with 250 and a hello if successful.
- Now we must set the sending mail address. Type mail from:
- Now we set the to address. Type RCPT TO:
- Type data to begin the email content.
- First we set the subject by typing Subject: Then press Enter twice.
- Now type the message content of your email. When done, press Enter – Period Key – Enter to close the message.
- Type Quit to exit telnet.
- Verify your email has been received.
