How to send a demand letter so the record holds up.

DEMAND LETTER DELIVERY · NEW YORK

What you are trying to prove.

There is no statute that tells you how a demand letter must be sent, because a demand letter is not a court paper. What you need is evidence, later, of three things: that the letter existed in a particular form on a particular date, that it was sent to the right person at the right address, and that it arrived or that a reasonable attempt was made. Everything below is in service of those three facts. For what the letter should say, start with how to write a demand letter in New York.

Certified mail with return receipt.

This is the standard, and for good reason. At the post office, certified mail gives you a receipt with a tracking number and the date of mailing, stamped by the clerk. Adding return receipt, the green card or its electronic equivalent, gets you a record of delivery with the recipient's signature or, for electronic return receipt, an image of it. The tracking history is available online and should be printed or saved as a PDF once delivery is recorded.

Practical notes. Pay for the physical green card or the electronic return receipt; plain certified without return receipt proves mailing and delivery but not who signed. Write the tracking number on your file copy of the letter. Keep the postal receipt itself, not just a photo. And mail it to the exact name and address that appear on the letter, so the envelope and the document match.

Some people add a second copy by regular first-class mail in a plain envelope. The reasoning is that certified mail can be refused or left unclaimed, while an ordinary envelope gets opened. Mailing both, and saying so in the letter, is cheap insurance.

Email.

Send it by email too, the same day, as a PDF attachment, to the address you have been using with this person or business. Email is not a substitute for certified mail, because it is easy to claim an email went to spam or was never received. But it is the version that gets read today, it is the one they will reply to, and if they do reply, that reply proves receipt of the letter better than any green card.

Keep the sent email with its full headers. If your email system shows read receipts or opens, save that. If you text the person to say a letter has been sent and a reply acknowledges it, save that. The point of all of it is to have a recipient's own words confirming the letter arrived.

Process server or hand delivery.

A process server is not necessary for a demand letter and most of the time is overkill, but there are situations where it is the right call: a recipient who refuses all mail, a business with a front desk that will not sign, or a dispute where you expect to be in court quickly and want a sworn affidavit of delivery in hand. A process server will hand the letter over and sign an affidavit stating when, where, and to whom. The cost is modest in New York City and more variable upstate.

Hand delivery by you personally works if the recipient will take the letter, and a dated, signed acknowledgment of receipt on your copy is excellent proof. But do not turn a delivery into a confrontation, and do not deliver it yourself if you have any reason to think the encounter could go badly. The letter is a record, not a scene.

Sending to a business: the registered address.

Businesses move, close storefronts, and change managers. A corporation or LLC registered in New York has an address on file with the Department of State, which you can find on the Department's public entity database by searching the business name. That is the address the state uses to deliver legal papers to the company, and sending a copy of your demand there, in addition to the place you actually dealt with, removes the argument that the letter went to the wrong office.

Some companies also list a registered agent, a person or service designated to receive legal papers on their behalf. If one is listed, send a copy there as well. Use the exact legal name of the entity on the envelope and the letter. A letter addressed to the restaurant's trade name, at a location that has since closed, is a letter the company can say it never got. A letter addressed to the LLC by its registered name, at the address it gave the state, is not.

For an out-of-state company doing business in New York, the same database will usually show the address it registered when it qualified to do business here. For a sole proprietor, the business is the person, and you send it to the person's home and business addresses.

The refused or unclaimed letter.

Certified mail comes back marked refused when the recipient declined to sign for it, and unclaimed when the post office left notices and nobody picked it up. People worry that this defeats the letter. It does not. A deliberate refusal is, if anything, better evidence than a signature, because it shows the recipient knew a letter was waiting and chose not to read it. Courts in New York generally do not let a party avoid notice by refusing the mail.

When the envelope comes back, do not open it. Keep it sealed, with the postal markings, in your file. Write the date it came back on your copy of the letter. Then send one more copy by regular first-class mail and one by email, noting in a short cover sentence that the certified letter was refused or unclaimed and the deadline in it stands. That is enough. Do not start a cycle of re-sending; the record is made.

Keeping the record for small claims.

Assemble one folder, physical or digital, in this order, and do not let it get scattered across your phone, your inbox, and a drawer:

1. The letter exactly as sent, as a PDF, with the date and the recipient's name and address on its face.
2. The enclosures that went with it, in the order the letter lists them.
3. The certified mail receipt, showing the tracking number and date of mailing.
4. The return receipt or the electronic delivery confirmation, or the returned envelope if it came back.
5. The sent email with the PDF attached, and any reply.
6. A short log: date mailed, date delivered or returned, date emailed, date of any response, deadline date.

That folder is what you hand the arbitrator when you are asked whether you tried to resolve this before filing. It also makes the deadline real. If the letter said April 24 and the folder shows delivery on April 12 and silence through May, the story tells itself. Our New York small claims court guide covers what happens next, and demand letter vs. small claims covers whether to send another letter or just file. The answer is usually just file.

What a demand letter does here.

Delivery is where a DIY letter most often falls apart, not because the writer did anything wrong on the page but because the mailing receipt is lost, the email was sent to a dead address, or the letter went to a storefront that had already closed. An attorney's letter comes with the mailing done, the Department of State address checked, and the file kept in order, and the letterhead tends to get the envelope signed for rather than refused. The letter itself is on the structure laid out in our worked sample outline, and what a flat fee covers is on flat-fee demand letters. The honest comparison of doing it yourself versus having a lawyer send it is on attorney demand letter vs. writing it yourself.

When the method does not matter: if the other side has disappeared entirely, with no address, no business registration, and no working email, no delivery method will reach them, and the question becomes whether they can be found and served with a lawsuit at all. A letter into the void is a record of trying, nothing more.