What Is Double Opt-in?

What is a Double Opt-in and When to Utilize it **Definition:**A double opt-in is adds an additional step to the email subscription opt-in process, requiring a user to verify their email address and confirm. Use double opt-in to build quality lists. A healthy list starts with genuine subscribers. Double opt-in signups — where new users confirm their email before joining — ensure every address is real and. What is an opt-in form? **Definition:**An opt-in is a form of consent given by web users, acknowledging interest in a product or service and authorizing a third party to contact them with further information.