Postal Mailing and Shipping Solutions Center (MSSC) Topics
Posted on February 18, 2026 by mailomg in Memo 860 // 0 Comments
List of topics the MSSC can assist with. To reach the MSSC, email us at MSSC@usps.gov or call 1-877-672-0007 from 7:00AM – 7:00PM CT.


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List of topics the MSSC can assist with. To reach the MSSC, email us at MSSC@usps.gov or call 1-877-672-0007 from 7:00AM – 7:00PM CT. Click to download [...]
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Mail threat detection is the process of identifying potentially hazardous mail and packages through Secure Mail and Safe Package Handling (SMSPH) protocols. Programs often [...]
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