Sieve (RFC 3028) is a language for filtering e-mail 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 it has no variables, loops, or ability to shell out to external programs.

Sieve.Info is a wiki site that attempts to gather documents, implementations, notes, ideas and any kind of information regarding Sieve.

• Overview of Sieve
• Documents - RFCs and Internet Drafts related to Sieve
• History and Milestones
• Information about the IETF Working Group and the IETF-MTA-Filters Mailing List

• A non-exhaustive list of Implementations
• Sieve Extensions Support Matrix

• Tutorials
• ExampleScripts