Can first class mail be tracked?

Related questions

1. How long does it take for first class post to arrive?
2. What does the T stand for in TNT?
3. Is TNT and FedEx the same?
4. How long does it take a package to clear customs in Canada?
5. How do I track my xpresspost?
6. What is the shipment reference number?
7. Can I track my package without tracking number?
8. Is Royal Mail 1st Class tracked?
9. What is FedEx TNT?
10. Can I get proof of posting for a letter?

Tags

1. #class
2. #confusing
3. #there
4. #package
5. #though
6. #efficient
7. #first
8. #purchased
9. #reference
10. #buyers
11. #tracking
12. #within
13. #return
14. #called
15. #include
16. #including
17. #large
18. #number
19. #envelope
20. #label
21. #agree