Comment 23 for bug 120672

I do not think that this is "great", since Mozilla does not mark all trash and
maybe some people have additional spam-filter-programms that generate header
additionals which causes the marked mails to be moved to the spam folder by a
mozilla filter setup.
I don't want to delete 50% of my spam e-mails myself.

So I think the only "great" solution is a "clean spam folder" item.

It's only a menu item to implement....