T3 Auto-Address for Act! is a custom add-on written by Twelve/Three to automatically fix and update contact addresses in your Act! database.
It uses an official U.S. Postal Service database API to retrieve correct address information and update a contact record, matching the record using fuzzy logic and special matching options.
Auto-Address will verify that your postal address is correct, including updating the zip code with the +4 digits.
This extension was originally developed for one of our customers who sends out thousands of product catalogs by mail every year, and there were significant cost losses due to invalid postal addresses. This add-on is a must for any Act! user who does regular postal mailings using their Act! data.