Sieve
Sieve is a programming language used for email filtering, primarily implemented in mail servers to process and manage incoming emails based on user-defined rules. It allows users to create scripts that automatically sort, forward, delete, or flag emails without requiring manual intervention. The language is standardized by the IETF (Internet Engineering Task Force) and is commonly supported by email services like Dovecot, Cyrus, and others.
Developers should learn Sieve when working on email server management, spam filtering systems, or email automation projects, as it provides a lightweight, server-side scripting solution for handling email workflows efficiently. It is particularly useful for implementing custom email rules in environments where users need automated sorting or filtering, such as in corporate email systems or webmail applications, reducing manual email handling and improving productivity.