ইলেক্ট্রনিক মেইল বক্সে প্রবেশ করতে নিম্নের কোন প্রটোকল ব্যবহৃত হয়?

There are three common protocols used to deliver email over the Internet:
- the Simple Mail Transfer Protocol (SMTP),
- the Post Office Protocol (POP), and
- the Internet Message Access Protocol (IMAP).
All three use TCP, and the last two are used for accessing electronic mailboxes.
- Special records stored in DNS servers play a role as well, using UDP. The current version of POP is version 3 (POP3) and the current version of IMAP is version 4 (IMAP4).

Source: www.sciencedirect.com