When checking the number of active email sensors in the Email Sensor menu and the number of email accounts with sensor detection enabled in the Email Account Inventory menu, it is important to note the difference between the two numbers.

The number of active mailbox sensors in the Email Sensor menu represents the number of mailboxes occupied credit in EAI. This means that these mailboxes should be an EAI sensor and should have a license.

The enabled number in the Email Account Inventory menu represents the number of mailboxes protected by EAI. It only needs email to be set up as a sensor, regardless of whether the mailbox has a license or not.