এক কম্পিউটার থেকে অন্য কম্পিউটারে ইমেইল পাঠাতে কোন প্রটোকল ব্যবহৃত হয়?

The full form of SMTP is the Simple Mail Transfer Protocol. It is a basic protocol for sending emails via servers between two computers on a TCP / IP network.
It is part of the TCP / IP protocol application level, which makes it easy to deliver email messages to one or more recipients over the network.
Thus, it has been used whenever an email is being sent to the recipient utilizing email servers from an email client, including Gmail or Outlook Express.