IMAP
Internet Message Access Protocol
Application Layer — Email
Protocol Overview
Full Name
Internet Message Access Protocol
Abbreviation
IMAP
OSI Layer
Application Layer
Category
Email
Default Port
143, 993
RFC
RFC 9051
About IMAP
Protocol for retrieving email that keeps messages on the server. Supports folders, search, and multi-device synchronization.
Application Layer
Email
Port 143, 993
Standards Reference
IMAP is defined in RFC 9051, published by the Internet Engineering Task Force (IETF). RFCs are the official standards documents for internet protocols and are freely available for public review.