The email capture allows your client (or you) to capture the emails of those who are viewing your StickyApp. It can also be thought of as a lead capture option.
The emails are collected in the builder, but emails are also sent out each time someone signs up. The notification are sent email that was entered into the setup box called Email Notification.
In most cases this should be your clients email, so that the notifications go directly to your client, and they can update their email list in MailChimp or another email service. Users will also receive a monthly report with the list of emails collected.
Email capture is best used when you to grow a businesses email list to be used with marketing. People are more apt to give their email to users when signing up for the newsletter gives them exclusive coupons offers or information about the business.
Click here to learn how to setup the Email Capture Feature