Undelivered Letters

Getting Started

When you send mail through our service, we handle the entire preparation and handoff to USPS for you. This includes printing, inserting, sealing, and submitting your letters.

If you're using Certified Mail, it’s best suited for situations where you need:

  • Proof that a letter was mailed
  • Tracking visibility through USPS
  • Documentation for compliance or recordkeeping

However, Certified Mail is not the right choice if you require:

  • Guaranteed delivery
  • A guaranteed recipient signature (unless additional services are used)

In This Article


How the Mailing Process Works

There are two stages in the delivery process. Our process and the USPS process. We print your letters, insert and seal the envelopes, and provide them directly to USPS for delivery. Once USPS receives your mail, they handle delivery entirely. At this point, tracking and delivery outcomes are fully controlled by USPS.


What Certified Mail Does (and Doesn’t Do)

Certified Mail provides:

  • Proof of mailing
  • Tracking information provided by USPS

Certified Mail does not provide:

  • Guaranteed delivery
  • Guaranteed delivery timelines
  • Guaranteed signatures

If your use case depends on confirmed delivery or signature, you may want to consider alternative mailing options.


Common Reasons for Undelivered Letters

While USPS successfully delivers the vast majority of mail, issues can occur. The most common reasons include:

  • Tracking not updated

    The letter may be delivered, but USPS tracking was not properly updated

  • Return to sender

    The address may be incorrect, incomplete, or undeliverable

  • Pickup required

    A delivery notice was left and the recipient has not retrieved the letter

  • Lost in transit

    Though rare, mailpieces can be lost within USPS systems

  • Refused

    Recipients are able to refuse acceptance of certified mail


What to Do If a Letter Isn’t Delivered

If your letter is not delivered for any reason,

  • We recommend resending the mailpiece
  • You may also contact USPS directly for additional details on the delivery status

Refund Policy

USPS does not guarantee delivery of Certified Mail. Because of this:

  • Refunds are not provided for undelivered mailpieces
  • Promo credits are not issued for delivery failures

We understand this can be frustrating. Unfortunately, USPS makes it very difficult for us to recover costs on undelivered items as well.

For full details, please review our refund policy.


Tracking & USPS Support

  • Track your Certified Mail directly through USPS, click here.
  • Learn more about Certified Mail tracking, click here.
  • Contact USPS directly here.

Key Takeaway

Certified Mail is ideal when you need proof that something was sent, not when you need certainty that it was received.

If delivery confirmation or signatures are critical, we recommend consider using other USPS services or alternative delivery methods.