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Demand letters, contract notices, settlement offers, tenancy notices, and lien notices are the legal letters most worth mailing: many statutes and contracts require written notice, and courts respect a paper trail. Whenever a deadline or claim starts ticking, send tracked mail (certified in the US, registered in Canada) and keep a copy.
This is general information, not legal advice.
Three reasons. First, some rules genuinely require written notice delivered by mail: email doesn't satisfy them no matter how convenient it is. Second, mail creates a record that is hard to dispute: a postmark, a tracking number, and a signature on delivery are facts, not claims. Third, a letter on paper carries formality. A demand or a termination notice in an envelope gets read differently than the same words in an inbox, and that difference sometimes produces payment or compliance where email produced silence.
| Letter type | Why mail it |
|---|---|
| Demand letters (payment, damages, small claims) | Courts often expect you tried to resolve the dispute first; the letter becomes exhibit A. |
| Contract notices (termination, renewal, breach) | Many contracts spell out a notice clause: follow it exactly or the notice can be void. |
| Settlement offers | A dated, trackable offer can matter later for cost awards or bad-faith arguments. |
| Tenancy notices (eviction, rent increase, entry) | Landlord-tenant statutes frequently prescribe the notice method and the notice period. |
| Lien notices | Mechanic's-lien and construction-lien statutes often have strict mailing deadlines: miss one and the lien right is gone. |
Read the notice clause in your contract first. It usually names the method (certified mail, registered mail, personal delivery) and the address. Send it to the address stated in the contract or lease: even if you know the person moved. Courts commonly test whether you followed the agreed notice procedure, and mailing to the "right" address instead of the contract address can invalidate an otherwise good notice.
Then match the method to the stakes. Routine business notices go by regular mail. Anything where you'll later need to prove the other side got it: a demand before a lawsuit, a termination that starts a clock goes tracked (US Certified Mail or Canada Registered Mail), both of which add tracking plus a proof-of-delivery record. LetterAgent's registered option covers both.
One detail people skip: keep the letter, the envelope's addressing, and the mailing receipt together as one file. Judges and opposing counsel often want to see the content and the proof of sending side by side, and reconstructing it months later is miserable.
Use tracked mail whenever the letter triggers a deadline, supports a future claim, or satisfies a statute. Demand letters before small claims, termination notices, lien notices, and anything your contract's notice clause requires by a specific method: these are the clear cases. The extra cost is small; the gap in provability between "I mailed it" and "here is the delivery record" is not. For day-to-day correspondence that carries no legal weight, regular mail is fine.
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.
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