Sending mail using a Certificate of Mailing on the SendPro C Lite, SendPro C, SendPro+, SendPro C Auto (8H00, 9H00)

Purchase a Certificate of Mailing when you need to have proof that you sent a letter or package.

You can only obtain a Certificate of Mailing from the USPS. A Certificate of Mailing is a receipt that provides evidence of the date that you took your mail to the USPS for mailing. You cannot produce this certificate with your device. It is a record of when you turned the mail piece over to the Post Office and you can only get it from the USPS.

1. Fill out the USPS postal forms 3606-D, 3665, or 3817. Obtain these at the post office or online at the USPS website.
2. Calculate the fees for all of the mailpieces. This can include the cost of the Certificate of Mailing fees as well as the total postage amount.
3. Tap Print on Envelopes on the Home screen
4. If you have the accounting feature enabled, tap Account and select an account. If your device's model number is 8H00 or 9H00 and if you have only a single account, once you select that account the device will remember that account the next time you start Print on Envelopes.
5. Scroll down and tap Print Mode on the Print on Envelopes app.
6. Tap Certificate of Mailing.
   
7. Tap Apply.
   
8. Tap on the postage amount and enter the amount you calculated in step 2.
9. Feed the appropriate form (3606-D, 3665, or 3817) through the feeder so that the prints on the form or or you can apply a tape strip to the form. Alternatively, you can print the meter stamp on each of the mailpieces included in the Certificate of Mailing.
10. Take the mailpieces and the printed form to the Post Office. They will apply a round stamp proof of induction mark that serves as legal proof that your mail will enter the USPS.