Sieve: An Email Filtering Language, January 2008
- File formats:
- PROPOSED STANDARD
- RFC 3028
- Updated by:
- RFC 5229, RFC 5429, RFC 6785, RFC 9042
- P. Guenther, Ed.
T. Showalter, Ed.
- sieve (app)
Discuss this RFC: Send questions or comments to firstname.lastname@example.org
This document describes a language for filtering email messages at time of final delivery. It is designed to be implementable on either a mail client or mail server. It is meant to be extensible, simple, and independent of access protocol, mail architecture, and operating system. It is suitable for running on a mail server where users may not be allowed to execute arbitrary programs, such as on black box Internet Message Access Protocol (IMAP) servers, as the base language has no variables, loops, or ability to shell out to external programs. [STANDARDS-TRACK]
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 8729.