Mail synonym

Here are some synonyms for "mail":

1. Post
2. Letter
3. Correspondence
4. Communication
5. Dispatch
6. Transmission
7. Delivery
8. Package
9. Parcel
10. Envelope
11. Epistle
12. Message
13. Note
14. Letterbox
15. Postal service

Note that some of these words may have slightly different connotations or nuances, but they all generally refer to the act of sending or receiving written or printed messages through a postal system.