| Answer | Crossword Clue |
|---|---|
| MME | Title on a Fr. envelope |
| RFD | Abbr. on a Mayberry envelope |
| MME | Abbr. on a French envelope |
| ATTN | Abbr. on a business envelope |
| AVION | Word on a French envelope |
| MLLE | Abbr. on a French envelope |
| CLASP | Fastener on a manila envelope |
| SWAK | Letters on a love-letter envelope |
| ATTN | Abbr. on a business envelope, perhaps |
| SWAK | Letters on a love letter's envelope |
| SWAK | Initials on a love letter's envelope |
| SWAK | Letters on a billet-doux's envelope |
| SEALEDWITHAKISS | "S.W.A.K." on an envelope |
| ATTN | Abbr. before a name on an envelope |
