Related Clues:
- Injection units, for short
- Not originals of letters, for short
- Medicinal meas.
- IV meas.
- Hypodermic units, for short
- Sends a duplicate to, briefly
- ATF find, perhaps
- Hypodermic needle amts.
- E-mails a few folks, perhaps
- Some dosage units (Abbr.)
- Dimes, in a way
- Hypo meas.
- E-mail options, and this puzzle's theme
- Duplicates, for short
- Mass quantities