|  | What is confirmed opt-in?Confirmed opt-in refers to an email address collection practice in which a person explicitly requests to be included on a list to receive email, and a confirmation email is subsequently sent to the recipient with a notification that some action is necessary before an email address will be added to the list. The recipient must respond or take other equivalent action in order to complete the subscription process. No messages other than the confirmation email are sent until the subscription process is completed.
This method is sometimes referred to as "closed loop opt-in", "double opt-in", or "verified opt-in".
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