First-Class Mail International | USPS
www.usps.com › international › first-class-mailFirst-Class Mail International ® (FCMI) service is the most affordable way to send letters and large envelopes to more than 180 countries, including Canada, Great Britain, and Australia. Send 1 oz letters or postcards around the world with one Global Forever ® stamp, which currently costs $1.40 and never expires, even if the postage price goes up.
How to Track First-Class Mail - PostGrid
When you ship a First-Class Mail Package, tracking is automatically applied and you don’t have to undergo any additional steps. The receipt will have a tracking number towards the bottom. You can enter this number on the USPS website to track your parcels. Alternatively, you can also enquire about your mail via SMS or call.