Double opt-in adds a confirmation step after an initial sign-up. For an email list, the applicant might receive a message containing a link to confirm the address before the subscription becomes final.[1] This differs from single opt-in, where submitting the form immediately completes the subscription.
A store can use the extra step to identify mistyped addresses and unintended registrations. Retain a clear record of what the person subscribed to; a confirmation click is not unlimited permission for unrelated purposes. Double opt-in describes a process, not a universal certification that every subsequent campaign is legally compliant. Assess purpose, content and applicable rules separately.
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Compiled with AI assistance using public sources. General explanation, not individual legal or tax advice. Describing a concept does not mean Zoloo offers it as a feature.