USPS postmark changes 2026: Here's what you should know to get your mail sent on time

If you mail in your ballot during election season or send your taxes through USPS, this postmark change may apply to you.

New postal rules could cost you late fees. What to know.

The U.S. Postal Service's new postmark process could lead to late fees and penalties when mailing time-sensitive documents.
AARP

How USPS Postmark Change Could Affect Mail Deadlines

The U.S. Postal Service (USPS) implemented new procedures for dating mail on Dec. 24, postmarking letters and packages with ...

USPS updated its postmark rules. Here's what that means for your mail

Many users posted the claim along with a screenshot of a BlueSky user who wrote, "USPS quietly changed its postmark rules — mail is no longer dated when you drop it off. The 'official' date is when it ...