to opt in

listen to the pronunciation of to opt in
الإنجليزية - التركية
Bir grup ya da sisteme katılmaya karar vermek
الإنجليزية - الإنجليزية
To choose to participate in something
If you can opt in to something, you are able to choose to be part of an agreement or system. He proposed that only those countries which were willing and able should opt in to phase three He didn't exactly opt out because he never opted in
to opt in
المفضلات