The United States Postal Service® (USPS®) is issuing a mandatory software update for the PostalOne! production system this weekend. This update will be implemented on Sunday, March 26, 2017. The PostalOne! Production (PROD) system will not be available during this update process, on Sunday morning March 26, 2017 between 2:00 a.m. and 10:00 a.m. CT. PostalOne! will then be updating the Test Environment for Mailers (TEM) on Monday, March 27, 2017 and TEM will be unavailable during that update period.
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