Block incoming spam with MailBox Sentry. The software stores some information about your addressees and will pass the replays and the delivery error messages without unnecessary questions. It analyses what sites you visit and passes registration notification messages If you receive a few spam messages or prefer to look through all new mail manually, the software will offer you a mode to preview incoming mail, after having processed and having passed on all legitimate correspondence.

The license of this software is Free Trial Software, the price is $15, you can free download and get a free trial.