Certified Mail is a USPS service that provides proof of mailing and delivery for important or time-sensitive documents. When you send Certified Mail through Stamps.com, you get:

  • Proof of mailing with a timestamp
  • Tracking and delivery confirmation
  • Optional Return Receipt (green card or electronic)
  • Full digital recordkeeping for your business compliance needs

It’s ideal for legal notices, contracts, tax documents, and government correspondence or anytime you need verifiable proof of delivery.