Related Clues:
- Bus. letter abbr
- Mail routing abbr
- Incidentally, in e-mail shorthand
- 'Incidentally,' online
- Abbr. before a memo recipient's name
- "Before I forget," in texts
- 'Before I forget,' in texts
- Envelope notation
- Abbr. on memos and fax cover pages
- Address block abbr
- Ltr. heads-up
- "Incidentally," in texts
- 'Incidentally,' in texts
- 'Before I forget' letters
- Start of a subj. line