Need to create double opt-in for an existing mailing list

Double opt in is usually just an email with a link the user clicks to confirm their original opt in. To do this, first add a column to your database called "OptIn" and set the default value to "0".

You can use our Universal Email server behavior to send an email to everyone in your database and create a message in the email that asks them to click a link to confirm that they want to be part of the email list.

The link would then just go back to your website with the email address included as a URL parameter in the link. The page it returns to would update your database and set the "OptIn" column to "1" and have a simple thank you message.