PopUpDomination is high-converting, fast-loading, mobile-responsive pop-up software that will start transforming your list growth in a matter of minutes.

How it works
1. In your PopupDomination account, go to the Mailings page.
2. Find MailerLite from the list and click Connect.
3. To get the API key click on Integrations below the list of services.
4. Login to your MailerLite account and go to Integrations page. There you will find the PopupDomination service and the API key.
That's it! Now you are ready to transfer subscribers between PopupDomination and Mailerlite.