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Quick answer: To mail a check online to Canada, create the check in OnlineCheckWriter.com with the vendor’s Canadian address, then choose USPS or FedEx. The service prints, labels, envelopes, and mails it. Use First Class USPS Canada for routine bills and FedEx Overnight when the due date is close. Delivery is not payment, because the vendor’s bank decides when the funds are available.
Key Takeaways
Will it get there by Thursday, and will their bank accept it? Here is how an invented lumber wholesaler in Bangor, Maine, pays an invented supplier in Saint John, New Brunswick. The amounts are made up too. Updated October 1, 2026.
How Do You Mail a Check Online to a Canadian Vendor?
The wholesaler owes the supplier for a load of cedar trim. Here are the steps, based on the pay with checks online page and the overnight check mailing to Canada page.
- Sign in to your account.
- Connect your bank account using its routing and account numbers.
- Enter the vendor’s name and full mailing address. For Canada, include the province and the postal code.
- Create the check with the amount, memo, and payment date. Put the invoice number in the memo, such as "Inv 5512, cedar trim".
- Choose a mail option: USPS or FedEx.
- Printed, labeled, enveloped, and mailed. OnlineCheckWriter says the platform does all four, and that mail is processed the same business day and handed to USPS or FedEx.
- Track it. OnlineCheckWriter says you can track your checks in real time. It also lists a First Class with tracking option, and says Priority Mail includes tracking.
The vendor receives a paper check and deposits it. OnlineCheckWriter lists integrations with QuickBooks Online, QuickBooks Desktop, NetSuite, Zoho Books, and Xero, among others.
Which Mail Option Fits a Check Going to Canada?
The overnight check mailing to Canada page listed these options when we checked on October 1, 2026. Prices change, so confirm the total in your account, since OnlineCheckWriter does not say whether other fees apply. Treat the timing as an estimate. Carrier schedules and border checks can add days (general information, not from OnlineCheckWriter).
| Mail option | Listed timing | Listed price |
|---|---|---|
| First Class USPS Canada | 1 to 5 business days | $2.99 |
| First Class with tracking (no Canada label) | Not listed | $8.10 |
| Priority Mail USPS (named in the Canada FAQ) | 1 to 3 business days, includes tracking | $17.54 |
| Express Mail USPS (named in the Canada FAQ) | 2 business days | $37.79 |
| FedEx Overnight Canada | Next business day | $24.99 |
OnlineCheckWriter labels only First Class USPS Canada and FedEx Overnight Canada in its price list. Its FAQ on Canadian deliveries also names First Class, Priority, and Express. First Class with tracking has no Canada label, so confirm in your account which options are offered for a Canadian address.
Which Option Should You Choose?
This table matches the situation to an option. It is our suggestion, built from the listed prices and timing, not a guarantee.
| Situation | Option to consider | Why |
|---|---|---|
| Routine invoice, vendor needs it delivered in two weeks | First Class USPS Canada, $2.99 | Lowest listed Canada option, with room for a slow week |
| Invoice due in about a week, and you want to follow it | Priority Mail USPS, or First Class with tracking if offered for your Canadian address | Priority lists 1 to 3 business days with tracking. First Class with tracking costs less at $8.10 but lists no timing |
| Invoice due tomorrow or the next day | FedEx Overnight Canada, $24.99 | Listed as next business day. Submit before the cutoff |
A worked example, with invented numbers. The supplier’s $6,800 invoice says the check must be delivered by Thursday. The wholesaler submits it on Tuesday morning, before the 1:30 PM EST cutoff, and picks FedEx Overnight at $24.99. FedEx is listed as next business day, so the check should arrive Wednesday. That leaves one spare day. Had the wholesaler submitted at 3 PM, the cutoff would have passed, and the spare day could be gone. First Class would have saved $22.00, but with a Thursday deadline it leaves no margin. That $22.00 is the price of the delivery buffer. It does not put money in the vendor’s account. The next section explains why.
Mail It Before the Cutoff
Your delivery buffer only works if the check goes out before 1:30 PM EST. Add the vendor’s Canadian address, choose USPS or FedEx, and OnlineCheckWriter prints, labels, envelopes, and mails it.
Does Delivery Mean the Vendor Is Paid?
No. Delivery is when the check lands on the vendor’s desk. Payment is when their bank makes the funds available. This is general information, not from OnlineCheckWriter, and it varies by bank.
- Collection can take longer than the mail. A Canadian bank often waits for the U.S. bank to confirm a U.S. check. That wait can last longer than the mail, and the credit can be reversed if the check comes back unpaid.
- Currency. The check is a U.S.-dollar item. If the vendor’s invoice is in Canadian dollars, agree on the amount and who covers any conversion before you send.
- Firm funds-by date? Ask the vendor whether an electronic payment fits better. A check is the wrong tool when the money must be in their account by a set day. Also ask whether their bank charges a deposit fee on a U.S. check.
What Mistakes Make a Cross-Border Check Late or Rejected?
- Submitting after the 1:30 PM EST cutoff and expecting same-day handling.
- Choosing First Class for an invoice due tomorrow. It lists 1 to 5 business days, so it can miss a one-day deadline.
- Leaving out the province or the postal code.
- Paying $24.99 to rush a routine invoice that had two weeks to spare.
- Skipping the memo, so the vendor cannot match the check to the invoice.
- Not asking whether the vendor accepts a check at all. Some prefer electronic payment.
- Using a name that does not match the vendor’s legal name on the invoice.
- Treating delivery as payment, and leaving no time for the vendor’s bank to make the funds available.
If you pay several suppliers at once, use the bulk payments page. For a send inside the U.S., see overnight check mailing.
FAQ: Mailing a Check Online from Bangor, Maine to Canada
Can you really mail a check online?
Yes. You create the check on screen, and the service prints, labels, envelopes, and mails it by USPS or FedEx.
How much does it cost to mail a check to Canada?
OnlineCheckWriter labels First Class USPS Canada at $2.99 and FedEx Overnight Canada at $24.99, as of October 1, 2026. It also lists $8.10 for First Class with tracking, $17.54 for Priority Mail, and $37.79 for Express Mail without a Canada label. It does not say whether other fees apply, so confirm the total in your account.
How long does a check to Canada take?
OnlineCheckWriter lists 1 to 5 business days for First Class, 1 to 3 for Priority Mail, and 2 for Express Mail. FedEx Overnight Canada is listed as next business day. Carrier schedules can change.
Can I track a check mailed to Canada?
Yes. OnlineCheckWriter says you can track your checks in real time. It lists a First Class with tracking option at $8.10 and says Priority Mail includes tracking.
What is the same-day cutoff?
OnlineCheckWriter lists 1:30 PM EST and says mail is processed the same business day. For an emergency after the cutoff, it says to call (408) 775-7720. Submit early when a due date is firm.
What does the vendor’s bank do with a U.S. check?
That is up to their bank. Some may hold the funds longer or charge a deposit fee. Ask the vendor how their bank treats it, since this is general information, not from OnlineCheckWriter.
What if the check does not arrive?
Not cleared does not mean lost. A cross-border check can take weeks to post. Check tracking first, then ask the vendor if they received or deposited it. If not, ask your bank about a stop payment, which may cost a fee. Voiding the check in your own records does not stop it at the bank. Confirm the stop, then issue a replacement.
When is mailing a check the wrong choice?
When the vendor prefers an electronic payment, when the money must be in their account by a set day, or when the due date is too tight for any mail option. Ask the vendor how they want to be paid before you pick a method.
One check, one memo, and a spare day when the date is firm.
Send the Next Vendor Check
Pick the mail option that fits the due date, put the invoice number in the memo, and track the check from your account.
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