Clue: Postal letters

Answer: 2 possible answers to Postal letters. From 3 to 4 leters.

Postal letters answers with 3 characters:

• RFD

Postal letters answers with 4 characters:

• MAIL

---

Similar Clues:

• Number of states whose last two letters are its own postal abbreviation (ONE with 3 letters)
• Postal Service letters (RFD with 3 letters)
• Postal letters? (ENCL with 4 letters)
• ''Spring ahead'' letters (DST with 3 letters)
• Believer's bracelet letters (WWJD with 4 letters)
• Union letters (e.g. AFL with 3 letters)
• Baking letters? (SPF with 3 letters)
• Old food label letters (RDA with 3 letters)
• Savings letters (IRA with 3 letters)
• Web letters (e.g. EMAIL with 5 letters)