Registration forms are crucial as they serve as the primary tool for building an email list. A well-designed form ensures that your audience willingly subscribes to receive your newsletters, promotional offers, and other marketing communications. This voluntary opt-in process is essential for maintaining compliance with regulations like the [GDPR](https://gdpr-info.eu/) and [CAN-SPAM](https://www.ftc.gov/tips-advice/business-center/guidance/can-spam-act-compliance-guide-business).