but I use sneakemail.com a lot

I managed to convert a friend from this service to Postfixs ability to deliver mail to an address like [email protected] . This has the advantage of making it much easier to use a working, but blockable address like sneakemail.com offers. All you do is enter a new address in the potential spam form.

This is also useful for taking advantage of the free offers out there. Simply toss in a spammable temporary address, get the message you need, then toss the address into a killfile.