Does double opt-in solve all compliance issues?

No, double opt in does not solve all compliance issues. It provides strong consent verification but is one component of comprehensive compliance. Other requirements still apply.

GDPR requires lawful basis (which consent satisfies), but also data minimization, purpose limitation, storage limitation, and rights management. Double opt in addresses consent but not these other obligations.

CAN-SPAM compliance requires functional unsubscribe, honest identification, and physical address regardless of consent method. Double opt in does not eliminate these requirements.