There are several methods to obtain signed consent for email marketing:
1. Double Opt-In: This involves sending a confirmation email to the user after they initially subscribe, requiring them to click a link to confirm their subscription. 2. Check Boxes: During the sign-up process, include a checkbox that users must tick to indicate their consent. 3. Written Consent: In some cases, especially in B2B contexts, you may use physical forms where the user can provide their signature.