Yes, certified mail requires a signature from the recipient or an authorized agent at the time of delivery. This is to provide proof of delivery, which can be useful in legal or other important situations where proof of delivery is required.
When the mail is delivered, the recipient or their authorized agent will need to sign for it. The signature will be captured by the postal carrier on a delivery record or on an electronic device.
The post office will then send you a confirmation of delivery, which includes the signature of the recipient or authorized agent. This confirmation can be used as proof that the mail was delivered.
If the recipient is not available to sign for the certified mail, the post office will leave a notice for the recipient to pick up the mail at the post office. The recipient will need to show identification and sign for the mail before it can be released to them.