The Email agent is called Mail Integration Solution, an add-on to enable monitoring and interaction based on contents of emails in an IMAP email box.
This works with versions 9.x, 10.x, and 11.x
This was developed by Automic Professional Services. To get a copy of Mail Intergration Solution, either contact your Account Manager or click on the "Contact Us" button in https://marketplace.automic.com/details/mail-integration-solution.
You may want to also check out an older community post regarding Email agent -- https://community.automic.com/discussion/383/what-is-an-email-agent