A protocol that defines how a client should fetch mail from and return mail to a mail server. IMAP is intended as a replacement for or extension to the Post Office Protocol (POP) . It is defined in RFC 1203 (v3) and RFC 2060 (v4) .
INTERNET MAIL ACCESS PROTOCOL (IMAP)
Meaning of INTERNET MAIL ACCESS PROTOCOL (IMAP) in English
Josh's Network English Glossary. Английский словарь Josh's Network. 2012