Hi there @bgm0512,
Most of the info submitted when someone fills up a sign-up form is tied to their subscriber profile, which is saved in the _mailpoet_subscribers
table of the database. For any custom fields, they would be saved in the _mailpoet_subscriber_custom_field
database table, tied to the subscriber table via the subscriber_id
That said, there aren’t any built-in options for customizing that new subscriber notification email that you receive when someone signs up, and changing it would require some custom coding. If you need help with custom code, we recommend reaching out to someone from Codeable: https://codeable.io