Deverbal from mail in.
mail-in (not comparable)
- Sent via mail.
2012 November 4, “Mail-in ballots: the hanging chads of 2012?”, in Reuters[1]:In the critical swing states of Ohio and Florida, more than a fifth of voters chose the mail-in option 2010.
- mail-in ballots
mail-in (plural mail-ins)
- Something sent via mail.
- I chose to do a mail-in instead of going to vote in person.
