| 100% | LTR | 3 | Something sent via the US Postal Service: Abbr. |
| 57% | MAILED | 6 | Sent via the postal service |
| 57% | MAILS | 5 | Sends via the postal service |
| 53% | SNAILMAIL | 9 | Rhyming term for correspondence sent via the Postal Service: 2 wds. |
| 47% | UPS | 3 | Private alternative to the US Postal Service |
| 46% | RFD | 3 | US Postal Service for farm families: Abbr. |
| 44% | ZIP | 3 | — code, five- or nine-digit number used by the US postal service |
| 42% | NOR | 3 | Conjunction in the U.S. Postal Service motto |
| 42% | EAGLE | 5 | Bird in the U.S. Postal Service logo |
| 42% | NOR | 3 | Word in the U.S. Postal Service motto |
| 41% | NOR | 3 | Repeated word in the U.S. Postal Service creed |
| 41% | MAIL | 4 | Letters and postcards sent through the postal service ... and something that is delivered to your house |
| 39% | NASA | 4 | US government agency that oversees the Launch Services Program: Abbr. |
| 38% | FLYLIKEANEAGLE | 14 | What the U.S. Postal Service used to do (ending in a two under) |
| 37% | AIRDROPS | 8 | Sends via the cloud |
| 37% | MAILED | 6 | Sent via the post office |
| 36% | STAMP | 5 | Elvis Presley Forever ___, tribute to Elvis Presley that was released by the U.S. Postal Service in 2015 |
| 36% | EMAILS | 6 | Messages sent via the Internet |
| 35% | EMAILS | 6 | Electronic messages sent via the internet |
| 35% | RFD | 3 | Postal service, once: Abbr. |
| 34% | SNAILMAIL | 9 | Messages sent via the post office: 2 wds. |
| 34% | WWI | 3 | The U.S. joined it in 1917: Abbr. |
| 34% | ENCL | 4 | Something sent with a letter: Abbr. |
| 34% | AID | 3 | The U.N. might send it |
| 34% | AMER | 4 | From the US: Abbr. |
| 33% | ENG | 3 | The US became independent from it: Abbr. |
| 33% | AMER | 4 | Made in the US: Abbr. |
| 33% | AMER | 4 | From the U.S.: Abbr. |
| 33% | ATL | 3 | Ocean between the US and the UK: Abbr. |
| 33% | ENG | 3 | Most common spoken language in the US: Abbr. |