 Digital Postmarks

A Digital Postmark (DPM) is a technology that applies a trusted time stamps issued by a postal operator to an electronic document, validates electronic signatures, and stores and archives all non-repudiation data needed to support a potential court challenge - it guarantees the certainty of date and time of the postmarking.This global standard was renamed the Electronic Postal Certification Mark (EPCM) in 2007 shortly after a new iteration of the technology was developed by Microsoft and Poste Italiane.