What to know about USPS postmark changes and the impact on bills, taxes and election ballots

USPS clarifies postmark rules that could affect mail deadlines

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New USPS rule alert

A new U.S. Postal Service rule will affect the postmark dates on your mail

ABC World News Tonight on Instagram: "The U.S. Postal Service is rolling out changes for postmarks in the new year — clarifying the new rules saying postmarks will be added when an envelope is processed rather than the day that it gets submitted. @whitjohnsontv reports."