>Hi All
>
>I have need to verify (zip + 4...) all my addresses (8000 and growing) in my database so I can use USPS bulk mail. Does anyone have some experience with software and an update service for doing this?
>
>Thanks

Check this link - it is a foxpro Bulk Mailer program. Works with all kinds of files and file structures (like your DBFs!). It was written by one of our famous UT people (Ed Hardin). He has been doing quite well with it and even offers an evaluation license.

http://www.hardin-soft.com/