Integrate with PostUp
1. To integrate with PostUp, head to Account Settings > Manage Brand.
2. Select ESP Integrations from the left menu and click the logo for PostUp. A pop up will appear asking for your API URL and API Key.
3. Click on the PostUp logo, which will prompt you to enter your username and password.
4. Enter your information and click Activate.
You're all set! Your settings will save for future campaigns - just be sure to update your list if you'd like to change what list your entries are sent to.