Legal mailing services for attorneys and pro se filers
By Justin Winter · Updated August 22, 2026
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, just proof of mailing and a signed proof of delivery 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.
Common questions
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?
There is no subscription, no minimum volume, and no account required — you pay per letter. At $12.99–$14.99 all-in, it is built for solo practitioners and pro se filers sending a handful of notices a month, not firms with enterprise mailroom contracts.