This is both a question and a suggestion:

What exactly is the format of entries in the blocker? Can I use wildcards an/or boolean operators?

Right now, it seems that the search request must match the "banned message" exactly. I am not certian if wildcards or booleans are allowed, but it would be a great feature to add. For instance, I could add "hardcore AND sex" to filter all messages that contain both hardcore and sex.

I hope you get the idea.

Great client, by the way!! Keep up the good work!