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Signature required means the carrier must get a signature before handing over the mail, and the item comes back if no one signs. Signature confirmation is a lighter service that records a signature or delivery scan but does not always require one in person. The first proves who accepted it; the second proves it arrived. Choose by how much proof you need.
With a signature-required service, the handover rule is strict: no signature, no delivery. If nobody is there to sign, the carrier leaves a notice and takes the item back to the facility, where the recipient picks it up or schedules redelivery. After a set holding period, an unclaimed item returns to the sender. That strictness is the point. The sender ends up with a record showing that a specific person signed, which is why lawyers, landlords, and government offices use it for notices where proof of receipt could end up in front of a judge.
The trade-off is failed delivery attempts. A recipient who works daytime hours may miss two attempts before the item goes back, which stretches the timeline by days. Some services let you require an adult signature, or a signature from a named person only, which is stricter still and fails more often. Read the exact service description before buying, because "signature required" is a family of services, not one uniform product, and the rules differ between USPS, Canada Post, and private couriers.
Signature confirmation is a tracking and proof add-on rather than a handover rule. It records the delivery event and captures a signature image or name when one is given, giving the sender a delivery record to point to. The key difference is what happens when nobody answers the door: depending on the carrier and service, the item may be left in a safe place with a delivery scan, or held for pickup, rather than automatically coming back after a missed signature.
That makes it a good fit for ordinary valuable mail where you want proof of arrival but do not need to prove a specific person took it. A small business shipping a replacement part, for example, usually wants to know the parcel arrived, not to force the customer to stay home for it. Signature confirmation typically costs less than a full signature-required service, and it pairs with standard tracking so you can watch the item move.
| Question | Signature required | Signature confirmation |
|---|---|---|
| Handed over without a signature? | No | Depends on carrier and service |
| What you get as proof | Signer name and signature | Delivery record, signature when captured |
| If nobody is home | Notice left, item held or returned | Delivery scan, safe drop, or hold for pickup |
| Best for | Legal notices, disputes, formal deadlines | Valuable goods, proof of arrival |
| Risk | More failed attempts, slower | Weaker proof of who accepted it |
Certified mail in the US and registered mail in Canada are separate services that overlap with both. Certified mail proves you mailed something and gives you a delivery record, but it does not by itself require a signature at the door unless you add a return receipt or restricted delivery. Registered mail is the most secure tier: the item is tracked at every handoff, kept separate from ordinary mail, and signed for along the way. People often confuse these with signature services, but they answer different questions: certified and registered prove the mailing and the chain of custody, while signature services govern the final handover.
In Canada, the closest equivalents are the signature option on parcels and registered mail for letters. Canada Post's registered service includes a signature at delivery and a chain of custody, which is why it is the usual pick for legal and government mail north of the border.
Pick signature required when the consequences of "it arrived but nobody signed" matter: a lease termination, a demand letter, a court-related notice, or anything where the other side might later claim they never got it. Pick signature confirmation when you mainly want a delivery record and a smoother experience for the recipient. And if the letter itself is the evidence, pair either service with a method that preserves the contents: keep a copy, note the date mailed, and save the tracking record.
With LetterAgent, you can ask your AI assistant to mail a letter with the registered option, US Certified Mail or Canada Registered Mail, which adds tracking and proof of delivery. You approve the exact quoted price before anything is sent, and the letter is printed and mailed as a standard letter. If you need a stricter signature rule than the registered option provides, say so when you describe the job, and check what the quoted service covers before approving.
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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