Sending it properly

This is the least interesting step and one of the most important. About eleven dollars and fifteen minutes at the post office buys you the evidence every later step depends on.

Why it matters

Three reasons, and each of them arrives weeks after you send the letter:

1. It starts a documented clock. "I sent it" is an assertion. "It was delivered on 14 March and signed for by J. Rivera" is a fact. Every deadline you set in the letter runs from that date.
2. It is what a regulator complaint rests on. When you tell a state insurance department that a documented claim went unanswered for six weeks, the delivery receipt is what makes that a complaint rather than a disagreement.
3. It removes the easiest excuse. "We never received it" ends the conversation and restarts your timeline. Certified mail ends that answer.

What to send

• Certified Mail, provides a tracking number and proof of mailing
• Return Receipt Requested, provides a signed card or electronic record showing who signed and when

At the rates that took effect on 12 July 2026, that is $5.55 for Certified Mail plus $4.65 for the green-card Return Receipt, on top of ordinary postage. Call it $11 for a normal letter. Ask for both at the counter, or add them online through USPS Click-N-Ship.

Return Receipt Electronic is $2.91 instead of $4.65 and emails you a PDF of the signature, so the whole thing lands closer to $9. Either works; the physical green card is marginally more impressive if you end up in front of a judge holding paper.

Step by step

1. Print and sign the letter. An unsigned letter reads as a draft.
2. Assemble the enclosures in the order the letter lists them: valuation report, repair invoice, pre-loss valuation print-out, vehicle history report, photographs of any remaining defects.
3. Photocopy or scan the entire package exactly as sent. If a dispute arises about what you sent, this is your answer.
4. Address it correctly. This is where most people go wrong. See below.
5. At the post office, ask for Certified Mail with Return Receipt Requested. Fill in form 3800 (certified) and 3811 (return receipt).
6. Keep the receipt. Photograph it. Note the tracking number somewhere you will not lose it.
7. Email a PDF copy to the adjuster the same day, so it lands immediately while the paper copy is in transit. Say in the email that the original has been sent by certified mail.
8. Track it. When it shows delivered, note the date and diarise your follow-up.

Getting the address right

Almost none of the national carriers publish a single claims mailing address. The address on a corporate contact page is a head office or a general-correspondence PO box, a demand letter sent there is delayed or lost, and it does not reach the adjuster holding your file.

The correct address is claim-specific. Get it from, in order of preference:

1. The adjuster's own letterhead or email signature
2. The claim acknowledgement letter you received after the accident
3. The claims portal, where the carrier has one
4. Asking the adjuster in writing: "Please confirm the mailing address for correspondence on claim number [X]."

Our insurer pages set out what each of the twelve largest carriers does.

Address it to the adjuster by name where you have it, with "Attention: Claims Department" as the fallback.

What to keep

A single folder, physical or digital:

• The signed letter as sent
• Every enclosure
• The certified mail receipt with tracking number
• The return receipt when it comes back
• A screenshot of the USPS delivery confirmation
• The email you sent to the adjuster, with its sent timestamp
• Notes of every phone call: date, time, who you spoke to, what was said

That folder is your case. If this ends in small claims court, you bring three copies of it.

After it lands

Diarise a follow-up call for 21 days after the delivery date. When you call, confirm the substance by email the same day:

"Confirming our call today: you advised [X]. My demand of $[Y] stands, as set out in my letter delivered on [date]."

The adjuster's file is the record that matters. A written summary is how your version gets into it.

Does email alone work?

It is better than nothing and much better than a phone call, but it is weaker. Delivery receipts are unreliable, corporate spam filters exist, and "we have no record of that email" is an easy thing to say.

Use both. Certified mail creates the record; email creates the speed.