# Double opt-in

Source: https://joinbreaker.ai/newsletter-glossary/double-opt-in

A signup method where users confirm twice. They enter their email, then click a link in a confirmation email. This ensures valid addresses and stronger consent.

A common misconception is that [GDPR](/newsletter-glossary/gdpr-general-data-protection-regulation) requires double opt-in. GDPR only requires explicit positive consent, however some countries like Germany do require double opt-in.