1. Priority service for urgent mail.

2. Determining the weight of mail for proper postage.

3. Mail that requires proof of delivery.

4. Person who handles payments at the post office.

5. Transporting and handing over mail to its destination.

6. Thin paper wrapper for letters.

7. Protection from loss or damage for valuable items.

8. Decorative card sent without an envelope.

9. Container for receiving incoming mail.

10. Person who delivers mail to households.

11. System to monitor the progress of mailed items.

12. Follow the progress of a mailed item.

13. Fast delivery service provided by the post office.

14. Sending out mail for delivery.