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Opt in Meaning in English

expression

ˈɑpt/ /ˈɪn/, /ɪn
AHP-t IN
ˈɒpt/ /ˈɪn
OPT in

Definition

To choose to participate in something or agree to be included, usually by signing up or giving permission.

Usage & Nuances

Common in business, tech, or legal contexts—especially with subscriptions, emails, and privacy. Opposite of 'opt out'. Can be used as a verb ('You need to opt in.') or a noun ('an opt-in system').

Example Sentences

You must opt in to receive the newsletter.

basic

Parents need to opt in for their children’s photos to be used.

basic

If you do not opt in, you won’t be added to the list.

basic

Most apps now ask if you want to opt in to data sharing.

natural

She didn’t opt in because she wasn’t interested in the offer.

natural

Don’t forget to opt in if you want access to the new features.

natural