Feature Request: Mass PM Deletion

Just to expand on this, a segregation of Best Answer/ New Badge PM's and PM's from other users would be great. Most of my PM's are best answer notifications, so any PM's from other users can sometimes get buried if the conversation isnt particularly active.
 
@manofchalk: good idea; though I may have disabled that so I don't get those PMs or any other notification PMs outside of ones from users. But a tab at the top for categories (default to 'All') and just ajax in data would be good. And keep this mass PM deletion as is.