Also addresses, as with an e-mail, 3 letters
Also addresses, in an e-mail, 3 letters
Also sends to, as an e-mail, 3 letters
Brings into the conversation, in a way, 3 letters
Congressional group (6), 3 letters
Dosage amounts: Abbr., 3 letters
Dosage units (Abbr.), 3 letters
Drip units, briefly, 3 letters
Dupes in some in-boxes, 3 letters
Dupes in some mailboxes, 3 letters
Duplicates, briefly, 3 letters
Duplicates, for short, 3 letters
E-mail options, and this puzzle's theme, 3 letters
E-mails a couple of people, perhaps, 3 letters
E-mails a few folks, perhaps, 3 letters
Emergency measures?, 3 letters
Emergency measures?: Abbr., 3 letters
Hypo capacity, for short, 3 letters
Hypodermic needle amts., 3 letters
Hypodermic units, for short, 3 letters
Includes in an e-mail, as a mgr., 3 letters
Includes in an e-mailing, 3 letters
Includes in an email, 3 letters
Includes indirectly, in a way, 3 letters
Informs in writing, briefly, 3 letters
Injection units, for short, 3 letters
Keeps apprised, briefly, 3 letters
Keeps in the e-mail loop, 3 letters
Keeps in the e-mail loop, briefly, 3 letters
Lab measures: Abbr., 3 letters
Liquid dosage amounts, for short, 3 letters
Liquid dosage amts., 3 letters
Liquid dosage letters, 3 letters
Loops into a conversation, briefly, 3 letters
Loops others into the email conversation, 3 letters
Measurements in the lab, 3 letters
Medicinal amounts (abbr.), 3 letters
Medicinal measures (abbr.), 3 letters
Medicinal measures, briefly, 3 letters
Medicine amounts: Abbr., 3 letters
Motorcycle engine units, briefly, 3 letters
Not originals of letters, for short, 3 letters
Office dupes, for short, 3 letters
Old-time duplicates: Abbr., 3 letters
Patient's dosage measure, for short, 3 letters
Secondary email addrs., 3 letters
Sends a dupe e-mail to, 3 letters
Sends a duplicate e-mail to, 3 letters
Sends a duplicate to, briefly, 3 letters
Sends a duplicate to, for short, 3 letters
Sends an e-mail FYI, 3 letters
Sends an e-mail to, but not as the recipient, 3 letters
Sends an email copy to, 3 letters
Sends e-mails to a few, 3 letters
Sends the same e-mail to, 3 letters
Shares an E-mail with, 3 letters
Shot selections?: Abbr., 3 letters
Some dosage units (Abbr.), 3 letters
Some duplicates (abbr.), 3 letters
Syringe dosage units, briefly, 3 letters
Syringe measurements: abbr., 3 letters
Syringe measures, for short, 3 letters
Those you duped, briefly, 3 letters
Types between From and To, perhaps, 3 letters
Units used for IV volumes, 3 letters