This document describes the process on how to install feature keys on physical Cisco Email Security Appliances (ESA), Web Security Appliances (WSA) and Security Management Appliances (SMA).
How to Install Feature Keys on Cisco ESA, WSA, and SMA?
Feature keys are sent from firstname.lastname@example.org to the nominated email address of the feature key purchase or renewal. The email contains an attachment with the feature keys applicable to the purchase or renewal.
Sample output of the feature keys is in the attachment: