opt in

verb

1. intr, adverb to choose to be involved in or part of a scheme, etc

Example Sentences

Lulu, the mobile dating app for women, has changed its system to allow men to opt-in.

From The Daily Beast

The new opt-in policy for men is a significant step forward for Lulu.

From The Daily Beast

Provide an opt-in system for religious organisation who wish to conduct marriages for same-sex couples.

From The Daily Beast