Opt-in
adj
adj ·Rare ·Advanced level
Definitions
Adjective
- 1 The property of having to choose explicitly to join or permit something; a decision having the default option being exclusion or avoidance; used particularly with regard to mailing lists and advertising. not-comparable
"They set up an opt-in mailing list, so that those who wanted the notices could subscribe."
Antonyms
All antonymsExample
More examples"They set up an opt-in mailing list, so that those who wanted the notices could subscribe."
Etymology
From opt + in.