opt-in
Definition from Wiktionary, the free dictionary
See also opt in
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English [edit]
Etymology [edit]
Adjective [edit]
opt-in (not comparable)
- Of a selection, 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 advertisement.
- They set up an opt-in mailing list, so that those who wanted the notices could subscribe.
