A certified letter from an attorney: what it is, and how to answer it
Lawyers send letters by Certified Mail so they can prove you received them, usually before they go to court. Most are one of four things: a demand for money or action, a cease and desist, a notice that a claim has been made, or court papers in a lawsuit. A deadline in a lawyer’s letter is usually the client’s own, not the law’s, but ignoring it often means the next envelope is a lawsuit. Court papers are different: a summons carries a deadline set by the court’s rules, and missing it can mean losing by default. Read it the day it arrives, decide whether you need your own lawyer, and if you answer, answer in writing by a method you can prove.
Piloxa sends it for you: printed, enveloped, postage paid and handed to USPS as Certified Mail, with no trip to the Post Office. Your first letter is $9.95 all in: one or two pages by Certified Mail with USPS tracking, with printing, the envelope, postage and the certified fee included. You see the exact pages, the recipient and one total before you pay. No subscription.
In short
If you answer the letter yourself, Piloxa mails your reply by USPS Certified Mail, with a return receipt if you want one, and keeps the exact pages you sent beside the USPS record, so your answer is as provable as theirs.
Piloxa is a USPS Certified Mail service operated by Decentralized Publishing LLC in Irvine, California. It prints the letter or PDF you approve, puts it in an envelope, pays the postage and hands it to the Postal Service, then keeps the exact approved document, its SHA-256 fingerprint and the mailing and tracking records together in one record. Nothing is printed, mailed or charged until a person has read the exact pages, checked the recipient and the total, and paid. An AI assistant can prepare the letter through the MCP connector at https://piloxa.com/mcp or the HTTP API described at https://piloxa.com/openapi.json; either way it only gets back a review link for the person to open.
Which kind of letter is it?
| It says | It is | What the deadline means |
|---|---|---|
| Pay, fix, return or do something by a date, "or we will file suit" | A demand letter | The client's deadline. Missing it does not lose you the case, but it is often the last step before one |
| Stop doing something (using a name, posting, contacting someone) | A cease and desist | No legal deadline of its own; continuing can be used as evidence you knew |
| Keep documents, emails, messages | A preservation or litigation hold letter | Destroying relevant evidence after this can be punished in a later case |
| A court name, case number, "summons" or "complaint" | A lawsuit | The court's deadline: 21 days after service in federal court (Fed. R. Civ. P. 12(a)(1)(A)(i)), 30 days in California (Code Civ. Proc. 412.20(a)(3)), others differ |
| A debt and an amount | Collection, often by a law firm acting as a debt collector | Your 30-day dispute right applies (certified letter from a debt collector) |
What not to do
- Do not ignore it. Refusing it or leaving it at the Post Office does not stop it; a refusal is recorded and is often treated as notice (refused certified mail).
- Do not call the lawyer to argue. Anything you say can be quoted back, and there is no record of what they said. If you talk, follow it up in writing.
- Do not admit more than you mean to. A reply that apologizes, explains and promises can read as an admission. Short and factual is safer.
- Do not destroy anything connected to the dispute, even if you think the claim is baseless.
How to answer it
- Decide whether you need your own lawyer. If the amount is large, if it is a lawsuit, or if your business or license is at stake, talk to one before replying. Many state bars run referral services with low-cost first consultations.
- If you answer yourself, put it in writing. Address it to the lawyer named in the letter, at the address in the letterhead. Refer to their letter by date and any reference number. Say what you dispute, what you will or will not do, and attach copies (never originals) of documents that support you.
- Mail it so you can prove it. Certified Mail with a return receipt shows when it was mailed and who signed for it. Keep a copy of the exact letter; the receipt alone does not show what was inside.
- Keep the file together. Their letter and envelope, your reply, the receipts and the tracking. If it does go to court, this is the first thing your lawyer or the judge asks for.
How to respond to a certified letter has a short reply outline you can adapt.
Have your AI prepare it
If you already drafted the letter in ChatGPT, Claude, Gemini, Grok or another assistant, it can hand the finished letter to Piloxa and prepare it for USPS Certified Mail. Ask it in plain words, for example: An attorney sent me a certified letter. Help me write a short, factual reply that admits nothing, then send it by Certified Mail with return receipt.
The connector address is https://piloxa.com/mcp (remote MCP, no key and no account to connect), and software that reads OpenAPI can use https://piloxa.com/openapi.json. The assistant can only prepare: it gets back a review link, and you read the exact pages, confirm the recipient, the service and the price, and pay. Nothing is printed, mailed or charged before that. What an assistant can and cannot do with Piloxa.
Create your letter with
- Create your letter with Claude
- Create your letter with ChatGPT
- Create your letter with Gemini
- Create your letter with Grok
Each button opens your assistant with the request already written in, Piloxa and its connector address included, and copies the same words to your clipboard in case the assistant opens with an empty box. Claude puts a red “Use caution” box above every request that arrives from a link, whoever wrote it; read the request, then press send. Nothing is printed or mailed until you read the review page and pay. How to connect your assistant
Questions people ask
Why did an attorney send me a certified letter?
So they can prove you received it. It is usually a demand, a cease and desist, a preservation notice or a step before a lawsuit.
Do I have to respond to a lawyer’s demand letter?
No law requires a reply to a demand letter, but ignoring one often leads to a lawsuit. A short written reply can settle it, or at least shows you disputed the claim at the time.
Is a certified letter from an attorney the same as being sued?
No. You are sued when you are served with a summons and complaint from a court. A letter on law firm letterhead is not a lawsuit, though it may come before one.
Should I call the attorney who sent the letter?
If you call, keep it short and confirm anything important in writing afterwards. A written reply sent by Certified Mail leaves a record a phone call does not.
How should I send my reply?
In writing, to the address on the letterhead, by a method you can prove: Certified Mail with a return receipt, and a copy of the exact letter you sent.
Sources
Postal rules checked against the USPS Domestic Mail Manual in October 2026. Legal rules differ by state and by situation.
Related Certified Mail guides
Ready to send it?
Paste the letter or attach the finished PDF. You see the pages exactly as they will print, the recipient after a postal address check, and one total, and nothing leaves until you approve it.