How to Keep Proof You Sent an Important Letter

• It's three facts, not a procedure: the document, the address, the date. Capture those and you have a record people will take seriously.
• The proof kit is small: a dated copy of the letter, a mailing confirmation with the date and recipient, and one line in a log.
• The date usually carries the weight. Most deadlines and rights turn on whether the right document reached the right place by a certain day.
• Mailed letters are generally presumed received. For a lot of purposes, a letter is treated as received a set number of days after it goes out.
• Be honest about the limit. A dated copy and a confirmation show you sent something. They aren't a record that a particular person handled it. When a rule names a specific method, that method wins.
• PostPal logs it for you. Every letter comes back with a dated confirmation showing what went out, to whom, and when. No trip out, no separate paperwork.

I get asked this more than anything else — how do I prove I actually sent it? So let me answer it honestly.

Most letters don't need proof. You mail them, they arrive, nobody ever raises the question again. The trouble shows up with a small handful: cancelling a membership before a renewal date, disputing a charge, handing a landlord or tenant a written notice, sending a government form before the cutoff. With those, a question can land on you months later. Did you send it, and when?

And here's the thing people get wrong about that worry. It's almost never that the letter got lost. Mail loss is rare. The fight is about timing. They say nothing ever arrived. They say your notice was late. They say you cancelled after the deadline, not before. If all you've got is "I'm pretty sure I dropped it in a box that week," you've got nothing to put on the table.

Proof is what you put on the table. You say: here's the letter I sent, here's the address it went to, here's the confirmation that it was mailed on this date. The argument usually stops there. A clean record tends to keep the dispute from starting in the first place, which is the whole point.

Be precise about what you're actually proving. For nearly every everyday legal, consumer, or government letter, the standard is simple: you sent the right document to the right address on a particular date. That's the question a company or a government office is really asking when they ask whether you sent it.

Look at what they're not asking for. Nobody needs a minute-by-minute account of where your envelope was, or the exact second someone tore it open. The bar is lower than most people picture. Show that the correct letter went to the correct place on the correct day and you've cleared it.

Now the honest part. A dated copy and a mailing confirmation are strong evidence you sent something. They do not prove a specific person picked it up and read it, and you shouldn't dress them up as a record of personal delivery. For the letters this guide is about, that gap almost never matters. When it does, meaning a law, a contract, or a court rule names the exact way a notice has to be delivered, that requirement comes first. More on that further down.

Nothing elaborate. The kit has three parts and you can put it together for any letter in a couple of minutes.

1. A dated copy of the exact letter. Before it leaves your hands, save or print a copy of what you actually sent. Same wording, same date, same recipient. If a question comes up later you want to hold up the real document, not something you've half-remembered and rebuilt. Write the date into the letter itself while you're at it.

2. A mailing confirmation with the date and recipient. This is the piece that fixes when it went out and where it went. A confirmation naming the recipient's address and the mailing date is the part most people are missing, and it's the part that does the most work when someone pushes back.

3. A short log. A running list so it all sits in one place and you can find it months from now. One line per letter does the job:

Keep the three pieces in one spot. A folder on your computer works. A labelled paper folder works. The goal is that when someone asks, you can put your hands on the copy, the confirmation, and the log line inside a minute.

Here's a point that surprises people, and it works in your favour. In a lot of settings the law doesn't make you prove the letter was ever opened. A letter sent by mail is often presumed to have been received a set number of days after it went out, frequently around five days, depending on which rules apply. People call this the "deemed received" or "mailbox" rule.

Under the Federal Courts Rules, for instance, a document sent by ordinary mail is deemed received on the relevant day after mailing. The rule fixes a timeframe instead of asking the sender to prove actual delivery. You can see how these service-by-mail provisions are laid out in the Rules of the Supreme Court of Canada. Plenty of other rules, tribunals, and contracts run on the same idea, though the exact number of days moves around.

What this means in practice: prove you mailed the right letter to the right address on a given date, and you're usually in good shape even when the recipient swears nothing showed up. Once mailing is established, the presumption tends to do the rest. That's the whole reason a dated copy and a confirmation matter so much. They lock down the one date the presumption hangs on. Stay modest with it, though. Whether a presumption applies, and how many days it gives you, depends on the situation. Treat it as the general principle it is, not a promise that holds every time.

Sometimes the rules are stricter, and I'd rather be straight with you about it. A contract, a statute, or a court or tribunal rule can spell out exactly how a notice has to be delivered. When it does, that method comes first. A "notices" clause might dictate how notice has to be given. A court process might set its own service requirements that override whatever you'd prefer to do.

So before you send anything time-sensitive or legally weighty, go read the source document. The "notices" section of your contract. The instructions printed on the government form. The rules of whatever body you're dealing with. If a specific method is genuinely required, follow it to the letter. If it isn't, and for most ordinary mail it isn't, the proof kit above is the practical way to go.

None of this is cause for nerves. The overwhelming majority of cancellations, disputes, consumer letters, and routine forms ask one thing: send the correct item to the correct place on time. Save the extra steps for the rare letter that actually spells them out. Use the simple approach for everything else.

The mailing confirmation is the part most people stumble on. The record of the date and the recipient. PostPal builds that in so it isn't something you have to remember.

You type your letter at postpal.ca/send, or upload one you've already written. We print it, fold it into an envelope, and send it through Canada Post the next business day for about $6 flat. You never leave your desk. There's nowhere to go.

Then we email you a dated confirmation showing exactly what was sent, to which address, and on what date. That email is your "I sent it" artifact, ready to file next to your dated copy and your log line. So two of the three pieces of the kit land in your inbox on their own. The third, the copy, is just the letter you already typed.

Is keeping a copy really enough?

On its own, no. A copy shows what you wrote. It says nothing about when you sent it or where it went. That's why the copy is only one leg of the kit. Add a mailing confirmation that records the date and recipient, plus a short log line, and now you have the whole story. For most everyday letters, that's exactly the record people are after.

How does PostPal prove I sent it?

When we mail your letter, we email you a dated confirmation showing what was sent, to which address, and on what date. You keep that confirmation with a copy of the letter. Between them, you can show with specifics that the right document went to the right address on a particular day.

What if the recipient says they never got it?

This is the worry I hear most, and it's where the kit earns its keep. You produce the dated copy and the confirmation showing you mailed the correct letter to the correct address on a specific date. And as covered above, a mailed letter is generally presumed received a few days after it goes out. So nailing down the mailing date often leaves you in a strong spot even when the other side insists nothing arrived.

Does this replace a court-grade record of delivery?

No, and I won't pretend it does. A dated copy and a confirmation are strong evidence you sent something. They are not a record that a specific person received it in hand. For routine cancellations, disputes, notices, and forms, that's usually all you need. If a law, contract, or court rule calls for a specific delivery method, follow that instead.

How long should I keep my proof?

At least until the matter is clearly closed. The renewal is cancelled, the dispute is settled, the form is processed, or the deadline has safely passed. For anything legal or financial, a year or more is sensible, because questions have a way of surfacing long after the fact. Keep the copy, confirmation, and log together and this takes no effort.

What should go in my mailing log?

One line per letter: the date you sent it, a short note on what it was, the recipient's address, where the proof is filed, and any deadline. The example earlier in the post shows the layout. The whole point is that you can find it and understand it months later, once the details have gone fuzzy.

Do I need to do anything special for a government form?

Usually not. Send the correct form to the correct address by the due date, and keep your dated copy and confirmation. Read the form's instructions first, though. If they spell out a particular way to submit it, do that. Otherwise the standard kit has you covered.

None of this needs a special trip or a stack of paperwork. Keep the dated copy, keep the confirmation with the date and recipient, jot the one log line. For a cancellation, a dispute, a notice, or a form, that's the record people ask for. And since a mailed letter is generally presumed received a few days out, locking down the mailing date quietly does most of the heavy lifting.

So when there's a letter you'll want to account for later, type or upload it and we'll handle the rest. Printed, mailed through Canada Post, and a dated confirmation back in your inbox showing what went out, to whom, and when. Filed for you, without leaving the house.

Mail your letter with PostPal →

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