New Mail.dat Specs Released mailomg 9 years ago The USPS released new Mail.dat Technical Specifications, Version 3, dated April 3, 2017. (click to read) Share this: Share on X (Opens in new window) X Share on X (Opens in new window) X Share on LinkedIn (Opens in new window) LinkedIn Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Email a link to a friend (Opens in new window) Email Print (Opens in new window) Print
