Rated 4 out of 5 stars

Hi, I try to contact you but n.o-s.p.a.m@vano.org does not exist.

Can you update your addon for Firefox 6.0.* and SeaMonkey 2.0.* / 2.1.* / 2.2.* ?

This review is for a previous version of the add-on (1.3). 

Not sure where you got that email from. Email listed under support section of this addon is valid.
Also, it's working fine with FF6, official support will be added in upcoming v1.4, until them "compatibility reporter" would be a way around.
As of seamonkey, I never used software and don't know what kind requirements it needs.