Submit your mail later in the day with a USPS Customer Supplier Agreement (CSA)

SortEngine™ Full Service IMb® Customer Supplier Agreement (CSA) helps mailers take advantage of the ability to submit USPS mail later in the day by supporting the finer sorts and unique documentation required by USPS CSA agreements.

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Mailers with a Customer Supplier Agreement (CSA) with the USPS are able to submit their mail later in the day, but they are also required to sort their mail into finer separations. The Full Service CSA package helps mailers sort based on their unique CSA agreement, including the ability to produce approved pallet placards and tray nesting.


  • Gain additional processing time by submitting your USPS mail later in the day

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