Opt-In

Definitions

1. An explicit action by a user agreeing to receive communication, enable a feature, or participate in a program. Opt-in mechanics matter for compliance, trust, and the quality of engagement metrics.

   In plain English: A user's explicit choice to join or allow something.

   Example: "The newsletter list shrank after they switched to true opt-in, but engagement got much better."

Related Terms

• Conversion Rate
• Customer Acquisition
• Growth Marketing
• Affiliate Marketing
• Co-Marketing
• Paid Acquisition
• Referral Program
• User Acquisition