Legal mailing services for attorneys and pro se filers
By Justin Winter · Updated August 22, 2026
The short answer
For legal notices, demand letters, and discovery requests, Certified Mail with electronic Return Receipt costs $14.99 all-in through paperplane — no account, no per-seat mailroom contract, a USPS mailing record and a signed USPS delivery record on every letter.
Solo practitioners, small firms, and people representing themselves all run into the same problem: a legal notice, demand letter, or discovery request needs to go out Certified Mail, but there is no in-house mailroom, no assistant to run to the post office, and no reason to sign an enterprise contract for a few letters a month. We print it, stamp it, and hand it to USPS — from your phone or laptop, no account required.
What this covers
- Demand letters before filing suit.
- Cease-and-desist letters.
- Discovery requests and other case correspondence to opposing counsel.
- Notices to clients, tenants, or other parties where proof of mailing matters.
- Court filings and notices that your court's rules allow to be served by mail.
Why Certified + electronic Return Receipt is usually the right level
Certified Mail alone gives you a tracking number and a USPS mailing receipt — proof that something was sent, on a specific date. For most legal correspondence, that is not quite enough: you also want proof it arrived. The electronic Return Receipt adds the recipient's signature and exact delivery time as a separate, standalone document, which holds up better if you later need to show not just that you mailed something, but that the other party received it. At $14.99 all-in, it costs $2 more than Certified alone and is worth it whenever a deadline, a hearing, or the other side's good faith could be disputed.
| Service | Price | What it proves |
|---|---|---|
| Certified Mail | $12.99 | You mailed it, on this date, tracked to delivery. |
| Certified + electronic Return Receipt | $14.99 | All of the above, plus the recipient's signature and delivery time. |
| Priority | $24.99 | Fast delivery (1–3 days) when speed matters more than proof. |
A note on proof of service
A mailed, dated proof of service is what most courts want to see when service is done by mail — usually a signed statement that a specific document was mailed to a specific party on a specific date, sometimes paired with the Certified Mail receipt itself. But this is general guidance, not legal advice: service rules vary by state, by court, and by the type of filing, and some proceedings require personal service or a particular form regardless of what you mail. Confirm your own jurisdiction's and court's service requirements before relying on Certified Mail to satisfy a deadline.
Templates that pair with this
If you are drafting the letter itself, start here: demand letter, letter of intent to sue, or cease-and-desist-letter letter. Each covers what to include before you mail it Certified.
Questions before you send
Why not go to the post office myself?
You can, and if your time is free it costs less. USPS charges the same fees whoever hands the letter over; paperplane does not replace the post office, it replaces the trip. The mailing record comes from USPS, not from us. $12.99 covers the printing, the envelope, PS Form 3800, a USPS address check before you pay and a handoff the next business day. For a letter you already know how to send, the counter is a fine choice.
What if they refuse the letter?
USPS tracking records what happened to it, including refused or unclaimed. You still have the mailing record. Rules on what that means vary, so check with your court or an attorney if a deadline depends on it.
If something goes wrong, do I pay?
If we cannot mail the letter, the hold on your card is released and you are not charged. If a letter fails after your card is charged, you are refunded automatically and in full.
Do I need Certified Mail or Certified with electronic Return Receipt for legal notices?
If you only need to show you mailed something on a given date, Certified ($12.99) covers it. If your matter might turn on whether the other side received it — a demand letter before suit, a discovery deadline, a lease termination — the electronic Return Receipt ($14.99) adds the recipient's signature and delivery time as a standalone document, which is stronger evidence if the matter goes to a hearing.
Can I use this for proof of service on a court filing?
Many courts accept a mailed, dated proof of service for certain filings, and Certified Mail's tracking and mailing receipt support that. But service rules are set by each state and each court, and some require personal service, a specific form of proof of service, or service by a non-party — rules we cannot verify for your case. Check your court's local rules or your jurisdiction's rules of civil procedure before relying on mailed service for anything with a deadline attached.
Is this cheaper than a legal mail vendor or courthouse mailroom contract?
Not always. A mailroom contract can win for a steady stream of letters. paperplane suits a few notices a month: $12.99 or $14.99 each, no minimum, no account.