opt-in popup

noun
UK /ˈɒpt ɪn ˈpɒpʌp/
US /ˈɑːpt ɪn ˈpɑːpʌp/

A small box that pops up on a screen and asks if you want to join something.

When I visited the website, an opt-in popup asked for my email address.


OTHER MEANINGS

2. A window that appears to collect permission before sending marketing messages.

The opt-in popup asked if I wanted to receive weekly deals.

3. A prompt that lets users choose to receive updates or notifications.

She clicked 'yes' on the opt-in popup to get app alerts.

4. A digital form that appears automatically to gather user agreement.

The opt-in popup appeared before I could read the article.