Sending Certified Mail

Getting Started

Certified Mail is a secure and trackable way to send important documents. This guide covers different certified mail scenarios, including sending to PO Boxes, international destinations, right from your home or office using LetterStream.

In This Article

Sending Certified Mail

LetterStream makes it easy to send Certified Mail without leaving your home or office:

  • No need for envelopes, stamps, or printers.
  • LetterStream handles printing, folding, inserting, and mailing.
  • You simply upload your documents and choose your mail type.

For more information on getting started, click here.

Send Certified Mail to a PO Box

Yes, you can send Certified Mail to a PO Box, but the process differs from mailing to a physical address:

  • Physical Address: USPS attempts delivery and captures a signature from an authorized recipient (unless you opt out of requiring a signature).
  • PO Box: USPS places a pickup notice in the recipient’s box. The recipient must go to the front desk and sign for the item.

If you send Certified Mail using LetterStream, the signature file is saved in your account for easy access—no need to manage physical green cards.

Send Certified Mail Internationally

Certified Mail is not available for international deliveries.

For international mail that requires tracking or proof of delivery, the USPS offers Registered Mail:

  • Registered Mail is available through LetterStream.
  • It provides delivery confirmation and tracking, though neither are guaranteed.
  • Be aware: Registered Mail is significantly more expensive than Certified Mail.

For more information, click here.

Weight Restrictions

While not detailed in this article, standard USPS weight and size limits apply for Certified Mail. Ensure your documents meet those requirements when preparing your mailing.