Thank you very much Christian, actually now the option appears in the menu :)) Anyway I think at the moment, when I created the filter they will disappear from the Filters list, and of course they won't filter any mail..
I'll have to investigate what is this Sieve about, at the beginning I thought that the RoundCube could be interfering with this (since I guess it is also used there), so I removed but did not help.. I guess there is something else there... -- [email protected] https://inverse.ca/sogo/lists
