When moving to a new email address, I needed to notify all my previous recipients. Rather than go through the pain of creating SQL queries of my MailRecents-4v.abcdmr file, I exported all previous recipients to the Address Book application, created a draft email addressed to everybody in my Address Book, and copied all these email addresses into a text file. Then I imported this file into System-1 Email Extractor, cleaned up the list, and exported the resulting list to a file. I will also find this application useful when extracting email addresses from any file in the future, so for the paltry sum it costs, it's quite a bargain. Thanks guys for an excellent utility!