Mailgun is an email delivery service for sending, receiving, and tracking emails. If you have a Mailgun account and would like to use it to send emails using Mailgun, you can use this integration to do so.
Instructions
Navigate to the Workspace menu and click Settings
Select Integrations
Click Setup Integration on the Mailgun card
Enter the Mailgun Domain and API key
Note:
The listed IP addresses will need to be whitelisted in your Mailgun account. You will be unable to view the Password after saving the integration.
Click Save
Navigate to Apps and Change the Sending Email for an App