Avelsieve is a Squirrelmail plugin that lets users create SIEVE scripts on mail servers that support SIEVE.
The Avelsieve project aims to provide a simple interface for both regular users and administrators/helpdesk staff to manage and create SIEVE filters. SIEVE is a mail filtering language that's primarily intended for server-side email filtering. For more information, consult RFC 3028 and Cyrusoft's page about SIEVE.
To help users create SIEVE scripts, the web interface offers a wizard-like GUI that creates a new rule. Once all the rules are assembled, they form a complete SIEVE script. However, the plugin only provides a subset of SIEVE's functionality to ensure user-friendliness, and Joe User doesn't need to know about SIEVE script construction.
Note that the plugin doesn't provide a parser. Instead, it saves PHP meta-data in the script itself, allowing ongoing filtering manipulation and editing. Multiple scripts aren't currently supported, though the plugin is in beta status and may change in the future.
In conclusion, Avelsieve is a useful tool for people who use Squirrelmail and want to manage their email better. Its simplified interface is designed for ease of use and accessibility, and as such it helps users create server-side filters without breaking a sweat. However, beware that the plug-in is still in beta, so some testing may be needed.
Version 1.9.9: N/A