Dsd mail

You're referring to the USPS (United States Postal Service) Delivery Sequence File (DSF) or Delivery Sequence Data (DSd)!

DSF/DSd is a file format used by the USPS to provide delivery sequence information for mailpieces. It contains data about the order in which mailpieces should be delivered to a specific address or group of addresses.

Here's a breakdown of the DSF/DSd file format:

  1. Record Type: Indicates the type of record (e.g., delivery sequence, carrier route, etc.).
  2. Delivery Point Sequence Number (DPSN): A unique identifier for each delivery point.
  3. Delivery Point Sequence (DPS): The order in which mailpieces should be delivered to the address.
  4. Carrier Route Code: Identifies the carrier route associated with the delivery point.
  5. Delivery Point Information: Includes the address, city, state, and ZIP code.

The DSF/DSd file is used by mailers, mail processing facilities, and postal carriers to ensure accurate and efficient delivery of mailpieces. It helps to:

  1. Optimize delivery routes: By providing the most efficient delivery sequence, mailers can reduce delivery costs and improve customer satisfaction.
  2. Improve mail tracking: The DSF/DSd file contains information about the delivery sequence, making it easier to track and verify mail delivery.
  3. Enhance customer service: By providing accurate delivery information, mailers can better serve their customers and resolve any delivery issues more efficiently.

If you're looking to create or work with DSF/DSd files, you can use specialized software or consult with a USPS representative for guidance.