Easy Method for Deleting Multiple Messages
Have you ever wanted to just delete all messages from a particular person, or all messages in a certain folder from your BlackBerry?
Well there's an easy way to do that, just perform a message search, and within the search results select "Delete Prior" from the menu. This will delete all the messages in that search prior to the date you selected.
Note however, that this does not remove the messages from the Mail Client.