It would be a great service to the world, if you could provide step-by-step setup instructions for using Mailgun to programmatically send email from a web application (e.g. a PHP script) running on an AWS EC2.

[Background: In the past AWS allowed their users to send massive quantities of email spam, which resulted in AWS servers being blocked by all spam filters. The great majority of AWS users, who are not spammers, are now saddled with intolerably severe restrictions (imposed by AWS) on programmatically sending emails to their customers.]