With usage notifications, an email can be sent to selected email addresses when a certain percentage of committed usage is exceeded.
Note: By default, this feature is disabled.
Below are steps needed to enable usage notifications, and how to edit the settings of usage notifications:
If the committed usage amount needs to be reduced, you may need to disable inactive mailboxes. Please refer to article number 100042774, "How to Check User Counts and Disable Inactive Mailboxes"
If there are any questions or assistance is needed, please contact Arctera Support at the following URL:
https://supportarctera.cloud.com/support-home/home

By default, emails are sent when 80 percent of committed usage is reached weekly. The percentage rate at which emails are sent and the frequency of notifications can be adjusted by following the below steps:
Notification emails are sent at 9 a.m. in the default company time zone.

System administrator's email addresses are added automatically to the list of notification recipients. 50 additional email addresses can be added to receive usage notifications. To add email addresses for usage notifications:

How to configure Arctera usage notifications