What happens after someone fills out the popup form to subscribe?

Leadin will scoop the form submission and create a contact in your database for you. We automatically spin up a “Subscribers” list when you activate the Popup-form Power-up, but you can hook modify that content of that form and hook it up to any tagged list you’d like using the CSS selector “.vex-dialog-form”.

If you setup a connected email list to one of the third-party email integrations, Leadin will also push that contact to your external email tool.

Hopefully that answers your questions and let me know if you need to know anything else about what happens. Cheers!