Shipping Sold Stamps From USA To Canada

Asking for a friend. Are any of you using a plain old letter envelope with a first class international stamp?

That's the way to go.

Yes. Works fine.

For standard shipping, that's what I do. $1.50 for Canada shipments, unless more than 2 oz.

Note that that First-Class International Mail can only contain non-dutiable documents. All other matter is classified as goods and is prohibited from being mailed as First-Class International Mail.

This is a UPU rule and ALL countries which are members of the UPU are required to comply (since 2019). Only "documents" are allowed inside a First Class mail, anything else (including stamps) is considered "goods" or "merchandise" and requires a Customs Declaration and is subject to any applicable duty taxes.

Can you 'get away' with sending stamps in an International First Class envelope? Yup. Can they interrupt, stop, delay, and/or even confiscate any International First Class mail that they find "goods" in? Yup.

Note that sending stamps via First Class mail is typically allowed within a country, this UPU regulation applies only to International First Class mail.

Here is a link to an article that describes the UPU regulation implementation for the USPS.
https://mailomg.com/2017/12/07/new-...-class-mail/

Don

Just a slight correction. With the postal increase last month the postage from the United states to Canada or any other place in the world for a 1 ounce letter or postcard is a $1.55.