Hi,
has someone tried this or knows something similar ?
RoundCube in version 0.3 and later supports a plugin system and provides actually two different Sieve-plugins, one out of the box, the other one is available here:
http://www.tehinterweb.co.uk/roundcube/#pisieverules
both work and provide a decent GUI with no need to write the sieve-syntax directly like the thunderbird-extension.
