What is Certified Mail?
Getting Started
Certified Mail is a USPS add-on service used with First-Class Mail that provides proof of mailing and basic tracking. It is commonly used when senders need to verify that a letter was sent and delivered.
In This Article
- What is Certified Mail?
- Proof of Mailing and Tracking
- Getting a Signature: Return Receipt Options
- When to Use Certified Mail
What is Certified Mail?
Certified Mail is not a standalone mailing service. It is an add-on that must be paired with First-Class Mail. This requires:
- The appropriate First-Class postage
- The additional Certified Mail fee
Once mailed, Certified Mail provides enhanced visibility and accountability over standard First-Class mailings.
Proof of Mailing and Tracking
Certified Mail provides:
- Proof of Mailing – Confirmation that your letter was sent
- Tracking Information – You can see the letter’s status within the USPS system, including confirmation of delivery
While USPS generally performs this service reliably, occasional delays or tracking gaps can occur.
Getting a Signature: Return Receipt Options
Certified Mail does not automatically include a recipient signature but can be added onto a job prior to approval.
Types of signatures:
Electronic Return Receipt (ERR) – A digital record of the recipient's signature
(Offered by LetterStream)
Paper Return Receipt (Green Card) – A physical signature card attached to the envelope
(Not offered by LetterStream)
The ERR is a more streamlined and secure way to confirm delivery. For more information, click here.
When to Use Certified Mail
Use Certified Mail when:
- You need proof that a letter was mailed
- You need evidence of delivery for legal or contractual reasons
- Your contract or policy requires notice to be sent via Certified Mail
Note: Certified Mail does not guarantee that the recipient will sign for or accept the letter. It only proves that you sent it, which is often all that’s legally required.