With Delivery Sequence File Processing (DSF2) AmeriList and the USPS® can help you reduce undeliverable mail by identifying inaccurate and incomplete addresses in your database.
Our Address Quality team can help you fill in those question marks using the Second Generation Delivery Sequence File. With our DSF2 service, we check your lists against the USPS® master database of 165+ million delivery points to help reduce returned mail.
Using the DSF2 file will help you:
Reduce undeliverable mail today by calling our Data Processing Team and asking about our DSF2® file services. 1.800.457.2899 or email us at firstname.lastname@example.org