How to Send Email Using Telnet in Windows 10

If you want to send Email using Telnet in Windows 10, first you need to enable Telnet Client from Windows features.

Enabling Telnet Client in Windows 10
1. Click Start->Control Panel-> Programs and Features
2. Click Turn Windows features on or off in the left side panel.3. Windows features popup window will be open. Scroll down till “Telnet Client” and put a check in that box and click ok button to enable that feature.

 

Sending Email using Telnet

  1. Press Windows key + R to open Run dialog
  2. Type cmd and press Enter key to open Command Prompt.
  3. In the command prompt, Type the following and press Enter key.

    telnet mail.server.com 25

    (mail.server.com is your mail service provider and 25 is the port number used by SMTP service.)

  4. You will receive the reply like,

    220 mail.server.com

    Seems your mail server responding our request. If you got any error message, then you need to check the port number. Some mail providers use 465 (secure port) or 587 (outlook users).

  5. Type the following and press enter key,

    HELO yourdomain.com

    Yourdomain is the domain which you send email.

  6. You will receive the reply like,

    250 mail.server.com Hello yourdomain.com pleased to meet you.

    if you receive error or no response try EHLO instead of HELO in the 5th step.

  7. Type the following and press enter,

    mail from: fromemail@fromemailserver.com

  8. You will receive the reply like,

    250 Sender OK.

  9. Type the following and press enter,

    rcpt to:toemail@toemailserver.com

  10. You will receive the reply like,

    250 OK – MAIL FROM fromemail@fromemailserver.com

  11. Type the following and press enter key,

    data

  12. Type the following and press enter key twice,

    subject: your subject line

  13. Type your body text and press enter key.
  14. Type single dot in the end of the message and press enter.
  15. You will receive the confirmation message from the email provider.
  16. Type quit to quit the Telnet client.