LetterAgent
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Yes. In the US and Canada, no law requires you to put your name or a return address on an ordinary domestic letter: a correct delivery address and proper postage are all the post office needs. But threats, harassment, fraud, and extortion are crimes whether or not you sign the letter. This is general information, not legal advice.
Here's the part most people get wrong: the post office never checks who a letter is from. A return address is a convenience, not a legal requirement. If the delivery address is correct and postage is paid, an unsigned, unmarked envelope moves through the system like any other letter. The return address exists for one reason: if the letter can't be delivered, the post office needs somewhere to send it back to.
That leads to the first real consequence of mailing anonymously. A letter with no return address that can't be delivered has nowhere to go. In the US, it ends up at the USPS Mail Recovery Center in Atlanta: the old "dead letter office": where staff open it looking for clues about the sender or recipient. If they can't find any, the contents are eventually destroyed or auctioned. So if your letter matters to you, anonymity means giving up any chance of getting it back.
Since the 2001 anthrax letters, mail screening changed permanently at sensitive destinations. Government offices, courthouses, corporate mailrooms, and many large organizations now treat mail with no return address as suspicious. Some refuse it outright; others route it through X-ray or hold it for inspection. An anonymous letter to a government official or a big company may be delayed, opened by security staff, or simply discarded without ever reaching the person you addressed it to.
The same goes for the crimes people imagine anonymity protects them from. Mailing a threat, a harassment campaign, or a fraudulent solicitation is a crime in both countries regardless of whether you sign your name, and in the US, using the mail to commit fraud or send threats across state lines is a federal offense investigators take seriously. An unsigned envelope doesn't make you untraceable; post offices keep surveillance footage, postage leaves payment trails, and forensic details (fingerprints, DNA, printer marks) have solved plenty of "anonymous" mail cases.
Plenty of ordinary mail goes out without one. Whistleblower tips, sensitive personal disclosures, surprise party invitations, and letters to public figures are all common and legal. Some people simply don't want their home address on an envelope. That's fine. Just understand the trade-offs: no return means no bounce-back, slower or rejected delivery at screened destinations, and no way to prove you sent it if a dispute comes up later.
| Choice | What happens |
|---|---|
| No return address | Legal for ordinary mail; undeliverable letters go to the Mail Recovery Center instead of back to you; extra screening at government and corporate mailrooms |
| Return address, no name | Gives undeliverable mail a way home while keeping your identity off the envelope |
| Full name + return address | Standard; fastest handling everywhere and required for services like certified or registered mail |
| Anonymous + illegal content | Still a crime: threats, fraud, and harassment by mail are prosecuted with or without a signature |
Not fully. LetterAgent uses a standard double-window business envelope: the recipient's address shows through one window and the sender's address through the other, and that sender address acts as the return address: undeliverable mail comes back to it. So every LetterAgent mailing carries a sender address by design. If you need the recipient to see a particular name, you control what goes on the letter itself, but the envelope will always show where it came from.
One more practical note for Canada: the same principle holds. Canada Post delivers properly addressed, properly paid mail without asking who sent it, and undeliverable mail with no return address is handled as dead mail. The screening caution applies at Canadian government buildings and large organizations too.
Ready to mail it? Send your letter with LetterAgent: describe it to your AI assistant, approve the exact quoted price, and it's printed and mailed.
LetterAgent is a working name. Prices include print, postage, and our service fee. US prices in USD, Canadian prices in CAD (Canadian prices exclude applicable sales tax, added at checkout). Currently in private testing.
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