opt in

opt in(to something)

to choose to join in. She opted into our plans. She opted in almost immediately.

Name	Pronounced	Usage
Manno	-	Ancient Germanic
Radoslav	rah-dah-SLAHF (Russian)	Czech, Serbian, Croatian, Bulgarian, Macedonian, Russian, Medieval Slavic
Hieremias	-	Biblical Latin
Iulian	-	Romanian
Veikko	VAYK-ko	Finnish
Yeager	['jeigə]