Updated Mail.dat Regs Effective June 25

The USPS has released an updated Mail.dat technical guide effective June 25, 2017. It outlines steps for exchanging electronic data with the PostalOne! system using the Mail.dat file format. The intended audience is business mailers who create use mailing data in the preparation or production of business mail and who also want to conduct business electronically in lieu of the hardcopy forms and processes that were traditionally used in business mail acceptance … (click to read more)