New Mail.dat Postal Software Replaces Legacy Systems
Lowers Costs while supporting both DTAC Mail.dat and Mail.XML eDoc standards AIMSplus™ is for commercial mailers who are still using desktop-based post presort tools to [...]
Mail.dat
Mail.dat Software Solutions and Advanced Analytics
Check out the Assurety booth at MAILCOM 2025 for Mail.dat Software Solutions, Advanced Analytics, and Digital Solutions for your mail operations … (click to read more) [...]
Mail.dat Updated Specifications
The USPS released Postal Service Technical Specifications for Mail.dat, Version 2, Release 61, dated December 2, 2024 … (click to [...]
Updated Mail.dat Tech Specs Guide
The USPS released an updated Mail.dat Technical Guide on January 9, 2023 — Version 4, Release 57. The technical guide that outlines steps for exchanging electronic data [...]
PostalOne! Changes April 25, 2021; New Mail.Dat Client Required
This document details software updates scheduled for Sunday, April 25, 2021. Impacted Commercial Systems include: — PostalOne! System Release 52.1.0.0 * — [...]
Mail.dat Technical Specifications R50 (Final Version)
The USPS has released the final version of the Mail.dat Tech Specifications, effective January 12, 2020 … (click to [...]
Updated Mail.dat and Mail.XML Specifications
The Postal Service has released the following updated specifications (click to see): Mail.XML Technical Specification R50 (Version 2) Mail.dat Technical Specifications R50 [...]
New Mail.dat Technical Specifications
The USPS has released new Mail.dat Specifications on June 9, 2019. Click to download Mail.dat Technical [...]
Required Mail.dat Client Version For June Price Change
The June Price Change 2019, PostalOne! System Release 49.0.0.0, will result in a new required Mail.dat client version. Users should download Mail.dat client version [...]
New Required Mail.dat Client Version On March 17, 2019
PostalOne! System Release 48.1.0.0 will result in a new required Mail.dat client version. Users should download Mail.dat client version 48.1.0.0_PROD from the Business [...]
New Mail.dat Regulations Effective October 22
The Postal Service has released new technical specifications for Mail.dat that are effective October 22, 2017 … (click to read [...]
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 [...]
New Mail.dat Specs Released
The USPS released May 21 the new Mail.dat comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! system using the Mail.dat file [...]
New Mail.dat Specs Released
The USPS released new Mail.dat Technical Specifications, Version 3, dated April 3, 2017. (click to [...]
New Mail.dat Specs From USPS
The Postal Service released the new Mail.dat Technical Specifications publication effective March 17, 2017. The 375-page document details steps for exchanging electronic data [...]
New Mail.dat Technical Specifications Released
The USPS released the updated comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! system using the Mail.dat file format. The [...]