USPS makes more changes to cut costs, improve service in 2026. Know how postmarks work to avoid late fees on bills, taxes.
The U.S. Postal Service's new postmark process could lead to late fees and penalties when mailing time-sensitive documents.
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Why your mail could be delayed in 2026; USPS changed postmark rules
Here's what to know about 2026 Postal Service changes in postmark process, postage stamps and USPS shipping rates ...
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