https://www.snopes.com/news/2025/12/30/usps-postmark-rules/
USPS updated its postmark rules. Here's what that means for your mail | Snopes.com
Users shared concern about what the changes could mean for voting by mail during elections.
postmark rulesuspsupdated
https://ctmirror.org/2026/01/16/did-the-us-postal-service-change-its-postmark-rules/
Did the US Postal Service change its postmark rules?
Jan 16, 2026 - Some people have raised concerns about the mailing of bills, absentee ballots and other items that require a specific postmark date.
postal servicepostmark rules