Definition
Double opt-in (also called confirmed opt-in) is a subscription process where users must confirm their email address before being added to a mailing list. After submitting their email, they receive a confirmation email with a link they must click. This ensures the email address is valid and that the owner actually wants to subscribe. Double opt-in results in higher-quality lists, lower bounce rates, and fewer spam complaints, though it may reduce signup conversion rates.
Related Topics
double opt inconfirmed opt inemail confirmationdouble optin