Not all USPS mail has tracking. Every USPS package service includes tracking at no extra cost: Priority Mail, Priority Mail Express, Ground Advantage, and Media Mail. Plain letters and standard envelopes do not come with tracking unless you add a service like Certified Mail or signature confirmation.
Tracking is built into every USPS package service:
Each label carries a unique tracking number, so you can follow the package from acceptance to delivery. Tracking is free when you buy postage. There is no separate charge for the number itself.
No. A standard stamped envelope has no tracking number. If you need to track a letter or flat, add one of these paid services:
Your tracking number shows up in a few places:
Enter the number at usps.com under Track & Manage, or text it to 28777 (2USPS). The USPS site gives you the most current scan history.
If you ship enough that tracking every order by hand is eating your day, that is the point of a 3PL. Simpl picks, packs, and ships your orders same-day, with tracking pushed back to your store automatically. Pricing starts at $7/order.