RFC's

• RFC 1869: SMTP Service Extensions
• RFC 1939: Post Office Protocol - Version 3
• RFC 2033: Local Mail Transfer Protocol
• RFC 2087: IMAP4 QUOTA extension
• RFC 2088: IMAP4 non-synchronizing literals
• RFC 2180: IMAP4 Multi-Accessed Mailbox Practice
• RFC 2298: An Extensible Message Format for Message Disposition Notifications
• RFC 2342: IMAP4 Namespace
• RFC 2449: POP3 Extension Mechanism
• RFC 2595: Using TLS with IMAP, POP3 and ACAP
• RFC 2683: IMAP4 Implementation Recommendations
• RFC 2821: Simple Mail Transfer Protocol
• RFC 2971: IMAP4 ID extension
• RFC 3028: Sieve: A Mail Filtering Language
• RFC 3348: The Internet Message Access Protocol (IMAP4) Child Mailbox Extension
• RFC 3461: Simple Mail Transfer Protocol (SMTP) Service Extension for Delivery Status Notifications (DSNs)
• RFC 3463: Enhanced Mail System Status Codes
• RFC 3464: An Extensible Message Format for Delivery Status Notifications
• RFC 3501: INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1
• RFC 3502: Internet Message Access Protocol (IMAP) - MULTIAPPEND Extension
• RFC 4314: IMAP4 Access Control List (ACL) Extension
• RFC 4315: Internet Message Access Protocol (IMAP) - UIDPLUS extension
• RFC 4409: Message Submission for Mail
• RFC 5255: Internet Message Access Protocol Internationalization
• RFC 5256: Internet Message Access Protocol - SORT and THREAD Extensions
• RFC 5321: Simple Mail Transfer Protocol