Key Points to Know:
- A USPS postmark confirms when a mail piece entered USPS possession, but the postmark date may not reflect the date the item was dropped off.
- Most postmarks are now applied during the first automated processing at a processing facility, which may occur one or more days after acceptance.
- Not all mail receives a postmark, and the absence of a postmark does not mean USPS did not accept the item.
- Due to operational changes, including regional transportation optimization, postmark delays may occur more frequently.
How to Ensure Same-Day Proof of Mailing:
To guarantee documentation showing the date USPS accepted your mail, customers must use one of the following:
- Request a manual (local) postmark at a retail counter
- Pay postage at the counter and receive a Postage Validation Imprint (PVI)
- Purchase a Certificate of Mailing, or use Certified or Registered Mail
Why This Matters:
Certain legal and tax deadlines (including IRS filings) rely on the postmark date to determine timely submission. Mail sent without one of the above services may show a later date than expected.
Please plan accordingly when mailing time-sensitive documents.
