[PDF] FAQ IMAP (Internet Message Access Protocol)

What is Internet Message Access Protocol (IMAP)?

The Internet Message Access Protocol is an application layer Internet protocol that allows an e-mail client to access email on a remote mail server. The current version is defined by RFC 9051. An IMAP server typically listens on well-known port 143, while IMAP over SSL/TLS (IMAPS) uses 993.

What does IMAP stand for?

In computing, the Internet Message Access Protocol ( IMAP) is an Internet standard protocol used by email clients to retrieve email messages from a mail server over a TCP/IP connection. IMAP is defined by RFC 9051 .

What is the current version of IMAP?

It was designed by Mark Crispin in 1986 as a remote access mailbox protocol, the current version of IMAP is IMAP4. It is used as the most commonly used protocol for retrieving emails. This term is also known as Internet mail access protocol, Interactive mail access protocol, and Interim mail access protocol.

Why is IMAP a popular email retrieval protocol?

In general, IMAP is a popular email retrieval protocol. Its popularity is growing due to the proliferation of mobile devices, such as smartphones and tablets. IMAP is ideal for those who need to access their email on the go or using different devices.