A double opt-in list provides two levels of confirmation for your contact. To join a double opt-in list, a contact must confirm the subscription by clicking an activation link that gets sent to his or her email address.

1. To enable the Double opt-in list feature, you must create a public or private list type under list type, you will then be given the option to make the list a double opt-in, select Yes.

   Read more about how to create a new list

2. Once you select Yes, a section will appear beneath the List type options titled Opt-in confirmation message.

   You can chose to keep the default confirmation message, or you can customize the sender's email address, subject, and message.

   Important:
   This message must contain the confirmation URL, which is the link the recipient must click on to subscribe to the double opt-in list. The token for the confirmation URL is {confirm_url}. By default, the message provided for you will include the confirmation URL token with hyperlinked text titled "Click here to confirm your subscription."

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