If I get SPAM-ed, in Hotmail I just select 'Block sender' and that sender is automatically blocked from my account. In Mozilla Mail, I have to manually define a new filter, which takes a lot more steps. So, it would be great to have what is basically a shortcut way of blocking a sender, without having to go through the entire process of defining a new filter like "sender: contains: address"

This is a duplicate of bug 71413. You may also be interested in http://www.mozilla.org/mailnews/specs/filters/FilterPrefill.html which outlines a proposed spec for this feature. *** This bug has been marked as a duplicate of 71413 ***

verified dup.