Double opt-in is a two-step process for confirming a user's consent to receive email communications, ensuring that only those who genuinely want to receive information are added to an email list. This method enhances the quality of the email list by verifying the user's intent through an initial sign-up and a follow-up confirmation, typically via a link sent to their email address. This process not only improves engagement rates but also helps maintain compliance with anti-spam laws.
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