1. log in to your project
2. Click on Settings in the menu on the left
3. Click on Payment Gateway & Integration
4. Click the Email Service Provider (ESP) that you want to integrate with your project
5. You will be prompted to login to your ESP and confirm some settings (tags/lists etc)
6. After you login to your ESP, you will need to return to the Hy.page settings page
7. Scroll down and click on Update Settings at the bottom of the page.
Note: If you will be adding the ESP late. For example. You already had your campaign running and then you will add the ESP after that. The ESP won't get the prior leads that had registered.