LetterAgent

Mail physical letters by just asking your AI assistant.


Status: LetterAgent is currently in private testing ahead of public launch. Everything on this page describes the service as it works today.

Home > Guides > Mailing a will safely

How do I mail a will or estate documents safely?

Use registered mail, the most secure service the post office offers, and never mail your only copy. Probate courts generally require the original will with wet-ink signatures, so a lost original can cause real legal trouble. Make a complete copy first, then send the original by the most secure service available.

This is general information, not legal advice.

Why does the original matter so much?

A photocopy of a will is often not accepted for probate. Courts want to see the original signatures and, in some jurisdictions, the original witness attestations, partly to rule out tampering. If you only ever created a digital copy or a scan, the document may not hold up. This is also why estate attorneys tell clients to store the original somewhere safe, like a fireproof box or the attorney's vault, and only move it when necessary.

DocumentHow to mail it
Original signed willUSPS Registered Mail or Canada Post registered mail; keep a full copy
Trust documents, powers of attorneyCertified mail (US) or registered mail (Canada) with tracking
Copies for beneficiaries or familyRegular first-class mail is usually fine
Death certificate copiesCertified mail; these are hard to reissue

What is registered mail and when do I need it?

USPS Registered Mail is the most secure service available: every piece is logged at each step, kept in locked containers, and delivered with a chain of custody that no other service matches. It is slower than certified mail, sometimes noticeably so, because security adds handling. For an original will, that tradeoff is worth it. Certified mail gives you proof of mailing and delivery; registered mail gives you maximum security in transit. When the document is irreplaceable, choose registered.

What else should I do before the envelope closes?

Photocopy or scan every page and keep the copy somewhere separate from the original. Write the tracking number down in a second place, like your phone or a note to a family member. Use a sturdy envelope, not the thin free ones, and consider a padded mailer for multi-page documents. Do not mark the outside with anything that announces the contents: "LAST WILL" on the envelope invites attention you do not want.

Can I mail estate documents internationally?

Sometimes, but check first. Probate rules differ by country, and some jurisdictions require originals to be filed in person. Registered mail in the U.S. is domestic-only for the full chain-of-custody treatment; international registered service exists but works differently. LetterAgent mails letters to U.S. and Canadian addresses only, so if your documents need to cross the border between the two countries, the registered or certified option is the right call.

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Ready to mail it? Send your letter with LetterAgent: describe it to your AI assistant, approve the exact quoted price, and it is 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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