Device control event notification

[vlafratta]

Hi guys, I recently set KES 11.1 policy for windows to login and send email notification of connected and disconnected devices control, this policy applies to all computers in the network.
The notifications work fine, but the only thing that causes me a bit of stress is the number of notifications, I literally plug in a flash drive and easily get 19 notification emails of the same event describing the same thing.

It will be very kind of you to help me here, and tell me how I can reduce it to a notification per device connected or disconnected.

Thanks in advance.