Purge

"Purge" refers to marking messages as deleted in folders where the messages either exceed the "Keep for nn days" property of the folder or exceed the folder's maximum message count, in which case older messages are marked deleted.

The "Purge" action will result in marking messages as deleted in folders where the messages either exceed the "Keep for nn days" property of the folder or exceed the folder's maximum message count, in which case older messages are marked deleted. This helps you to automatically manage the amount of space your mail base occupies as time goes by.

Purge can be useful, for example, in a folder where you keep weekly price lists, a 7 day purge will make sure that only the current price list is kept.

These messages stay in place, unseen, until the folder is Compressed.