USPS Certified Mail with legal proof of service

Certified mail under programmatic control

Send USPS Certified Mail with Electronic Return Receipt and capture immutable, legally verifiable proof of service — for every notice. Built for landlords, property managers, and anyone who needs mail that holds up. Send it from a dashboard, a CSV batch, or the API.

Prepaid wallet · No subscription · Pay per piece

How it works

From draft to defensible evidence in four steps.

  1. 01

    Compose or upload

    Draft a notice from a state-aware template, or upload recipients as a CSV batch. We render each piece to a print-ready PDF and compute any statutory deadlines for you.

  2. 02

    We mail it certified

    Every piece goes out as USPS Certified Mail with Electronic Return Receipt — the legally recognized way to prove a notice was sent and received.

  3. 03

    Track every status

    Follow each letter through its lifecycle: queued, submitted, mailed, in transit, and delivered or returned — in real time from your dashboard.

  4. 04

    Get proof of service

    The rendered notice, proof of mailing, and return receipt are captured as immutable evidence you can download or produce in a dispute.

Everything you need for verifiable mail

Compliance-grade tooling for legal notices, built to produce evidence you can stand behind.

Certified + Electronic Return Receipt

Every piece is sent as USPS Certified Mail with Electronic Return Receipt, the standard for legally verifiable delivery.

Immutable proof of service

The rendered notice, proof of mailing, and return receipt are stored as tamper-evident evidence — captured once, never altered.

Full status tracking

Watch each letter move from queued to submitted, mailed, in transit, and delivered or returned, with a timestamped history.

Templates + deadline math

Compose from state-aware notice templates rendered to PDF, with statutory deadlines computed automatically from the mail date.

Batch management + CSV upload

Send one letter or thousands. Upload a CSV, review the batch, and release it — every piece tracked individually.

Prepaid wallet billing

Fund a wallet with Stripe and pay per piece as you mail. No subscription, no minimums, no surprise invoices.

TOTP two-factor security

Protect your account and your legal mail with TOTP two-factor authentication and recovery codes.

Dashboard, CSV, or API

Work the way you want — send from the dashboard, upload a batch, or drive everything programmatically over the API.

Simple, prepaid pricing

Fund a wallet with Stripe and pay per piece as you mail. No subscription, no minimums, no recurring fees.

Most used

Certified Mail + Electronic Return Receipt

Legally verifiable delivery with return receipt evidence.

$10.43per piece
  • USPS Certified Mail
  • Electronic Return Receipt
  • Immutable proof of service
  • Full lifecycle status tracking
Get started

First-Class Mail

Standard delivery for everything that doesn't need certification.

$1.41per piece
  • USPS First-Class delivery
  • Same templates and PDF rendering
  • Batch and CSV support
  • Status tracking
Get started

Prices are per mailed piece and include USPS postage and fees. You only pay for what you send.

Frequently asked questions

What is proof of service?
It's verifiable evidence that a notice was sent and delivered. For every certified piece we capture the rendered notice, the proof of mailing, and the USPS return receipt, and store them as immutable records you can download or produce in a dispute.
How fast does it mail?
Pieces move through a tracked lifecycle — queued, submitted, mailed, in transit, and delivered or returned. Once a batch is released it's submitted to USPS for the next mailing, and you can watch each status update from your dashboard.
Is there an API?
Yes. Anything you can do from the dashboard you can do programmatically over the API — compose and send certified mail, submit batches, and pull status and proof-of-service evidence into your own systems.
Do I need a subscription?
No. CertifySteve runs on a prepaid wallet — fund it with Stripe and pay per piece as you mail. There are no subscriptions, minimums, or recurring fees.

Put your certified mail on autopilot

Create an account, fund your wallet, and send your first piece of verifiable certified mail today.