1. Series of letters and numbers for sorting mail

1. Card sent by mail without an envelope

2. Organizing mail based on its destination

3. Flat paper container for mailing items

4. Act of bringing mail to its destination

5. Level of importance for mail delivery

6. Process of monitoring mail's journey

7. Package sent through mail

8. Official mark on mail as proof of payment

9. Box or container for mailing items

10. Designated spot for depositing outgoing mail

11. Collecting mail from a mailbox

12. Fast delivery service

13. Cost of sending mail

14. Numeric code for sorting mail