Clue: Service-mail initials

Answer: APO

Length: 3

---

Similar Clues:

• Service mail initials (APO with 3 letters)
• Rural mail delivery services, once (RFDS with 4 letters)
• Service initials (e.g. SSS with 3 letters)
• Remote mail service: Abbr. (RFD with 3 letters)
• Wire service initials (UPI with 3 letters)
• Mail-address initials (POB with 3 letters)
• Mail service with an extra fee (SPECIALDELIVERY with 15 letters)
• Mil. service initials (UMT with 3 letters)
• Fee for mail service (POSTAGE with 7 letters)
• GI mail service (APO with 3 letters)