Mailing Date Change Option for Seamless Mailers

Posted on March 26, 2025 by mailomg in Memo 788 // 0 Comments

Seamless mailers may change the date of finalization in case of printing or internal delays.

Click for Fact Sheet

Eligible Mail Classes:

• First-Class Mail cards, letters, and flats

• USPS Marketing Mail, letters and flats

• Bound Printed Matter, flats

• Periodicals, letters and flats

Resources:

Mailing & Shipping Solutions Center (MSSC) Help Desk
• Phone: 1-877-672-0007 • Email: MSSC@usps.gov

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