Introduced as a replacement of the defunct Logs API, Mailgun Events API primarily facilitates email tracking. The functional infrastructure of the API allows users to monitor the conveyance of email communications to target recipients. Its data retention for paid account holders and free account holders is 30 days and two days respectively. Mailgun Events’ authentication takes place through the HTTP Basic Auth model using an API key that is accessible after Mailgun account sign up. The RESTful API is fully documented and is designed to convey returns in JSON format.