Proof & return receipts
Where should I send a certified letter to a company?
Updated · By the Certified Letter Online team
Send it to the address your contract, terms or bill names for notices or cancellations. If there isn't one, use the company's registered agent, which you can find in the Secretary of State business search for the state where it's registered, or its principal office. For card billing disputes, use the special billing-error address on your statement.
| Letter | Best address | Where to find it |
|---|---|---|
| Cancellation of a membership or contract | Notice/cancellation address in the contract | Your agreement, app or terms page |
| Credit card billing dispute | Billing-error address (not the payment address) | Your card statement |
| Demand letter / pre-suit notice | Registered agent or address the statute names | Secretary of State business search |
| California CLRA notice | Where the transaction happened or principal place of business in California | Civil Code 1782 |
| Complaint to the company | Corporate customer relations or legal department | Company website |
Addressing tips
- Use the company's exact legal name (for example "Example Fitness LLC"), not just the brand.
- Add an Attn: line, such as "Attn: Cancellations" or "Attn: Legal Department".
- Mention your account or member number in the subject line so the letter is matched to you.
- If you're unsure, send to two addresses (notice address and registered agent). It costs another letter but removes the argument.
A note on legal notices
This guide is general information, not legal advice. For your specific situation, a legal aid office or a licensed attorney in your state can tell you what applies.
Quick answers
What is a registered agent?
The person or company a business appoints to receive legal papers in a state. Its name and address are public in the Secretary of State's business records.
Should I send my cancellation to the local club or the head office?
To whichever address your contract names. If it names none, sending to both is the safest option.
Can I send certified mail to a company's PO Box?
Yes, see certified mail to a PO Box.
What to do next
Found the address? Type your letter, and we'll mail it Certified with return receipt for $17.99.
Write my letterSources
- USA.gov: Secretary of State and business registration offices
- 12 CFR 1026.13: Billing error resolution
- California Civil Code 1782 (CLRA notice)
Checked: . General information, not legal advice. Fees and rules change: confirm current values at the official links above.