Xpunge

Xpunge is a simple extension for your Mozilla Thunderbird. It allows the user to empty the trash and junk folders, and compact folders in multiple Thunderbird accounts with a single action. Xpunge can be invoked either on the currently selected account only ("Xpunge" button) or on a configurable list of multiple Thunderbird accounts ("MultiXpunge" button). There is also a separately configurable timer feature that allows the functionality offered by "MultiXpunge" to be automatically applied at regular intervals and at a specific time every day.

Requirements:

Mozilla Thunderbird 5.0