What is an Electronic Return Receipt (ERR)?
Electronic Return Receipt (ERR) is a way for you to receive a signature from the recipient of your Certified letter, without receiving a green card back. ERR is an electronic document that you have access to in your LetterStream account if/when it becomes available from the USPS.
There are many advantages to the ERR over the green card. You no longer have to worry about misplacing the green card, because you can access the ERR from your LetterStream account any time by simply clicking on the intended recipient. Also, using an ERR you no longer have to wait for it to be mailed back to you and therefore increase the chances of the USPS misplacing your green card. Upon successful delivery, you have immediate access to the signature file once the USPS updates their system with it.