An email server function that forwards all questionable email to a single mailbox. The catch-all should be monitored regularly to find misdirected questions, unsubscribes or other genuine live email.

3 Quick And Easy Ways To Build A Profitable Opt-In List
You finally realize that you need a good opt-in list. After reading countless articles and sought expert advices and have read many success stories of people creating a small fortune with opt-in lists you finally decide to have one of your own.