Is USPS Certified Mail trackable?

Related questions

1. Do tracking numbers expire USPS?
2. What can I do if USPS loses my package?
3. How do I talk to a human at USPS?
4. Does USPS search packages for drugs?
5. How long does it take for international shipping USPS?
6. Does USPS tracking cost extra?
7. Is the label number the same as tracking number?
8. How can I track a certified mail tracking number?
9. How can I track a certified letter without a tracking number?
10. Does USPS Priority Mail have tracking?

Tags

1. #track
2. #mailing
3. #delivery
4. #refused
5. #certified
6. #information
7. #messages
8. #sender
9. #online
10. #include
11. #returned
12. #after
13. #letters
14. #arrival
15. #notice
16. #reported
17. #delivered
18. #tracking
19. #numbers