| Answer | Crossword Clue |
|---|---|
| SASES | Return-mail courtesies: Abbr. |
| SASES | Return mail courtesies (Abbr.) |
| SAE | Return mail requirement (abbr.) |
| SAE | Return mail requirement (Abbr.) |
| SASE | Return mail requirement (abbr.) |
| SASES | Return-mail encs. |
| SASE | Return-mail acronym |
| SASE | Return-mail enc. |
| SENDER | Return site for stampless mail |
