PS Form 3817, Certificate of Mailing, is a label providing proof that a mailpiece was presented to the United States Postal Service (USPS) for mailing.
This form was last revised on April 1, 2007. As of today, no PS Form 3817 fillable copies are available online. A printable PS Form 3817 can be downloaded below.
The USPS Certificate of Mailing is a USPS special service that provides evidence that mail has been presented to the postal office for mailing. However, it does not show that the mail was delivered to the addressee. This means that the USPS does not track letters or mailpieces to ensure they were received, and does not verify that the addresses on the mailpieces are complete or accurate, either.
The USPS does not keep records or copies of the mailing certificates. The only party in possession of this certificate is the mailer. Moreover, they do not keep records of mailpieces that have been returned to the sender.
Pressing the PRINT button will only print the current page. Download the document to your desktop, tablet or smartphone to be able to print it out in full.