The expire phase can perform one of these actions:
Discard — removes messages from the mailbox immediately.
Archive – archives messages by using the AxsOne archive store.
Fileinto — moves messages to a specified mailbox folder.
Report — prints the specified mailbox name, uid, and uid validity to stdout.
By default, imexpire discards messages.
For details about how the imexpire actions can be performed, see To Set the Automatic Message Removal (Expire and Purge) Feature in Sun Java System Messaging Server 6.3 Administration Guide