Rated 5 out of 5 stars
Since version 2.1.0 sieve has become a very stable Thunderbird add-on to program a server-side e-mail filter and sorter. I use it on my Dovecot server. The add-on closely adheres to the complete sieve language specification. Thomas also responds quickly to any support queries. Many thanks from a happy user!This review is for a previous version of the add-on (0.2.1).