Fortunately there is an event thrown in the application log from CCLUS on the License Server that informs about the number of left licenses when the free license count reaches 10%.

Requirements

You will need to configure a task for example with Windows Task Scheduler (pre-installed) which runs a job as soon as there is this specific event and e. g. send an email. Since Windows Server 2012 the Task Scheduler is not able to to send emails on its own anymore (depricated), so we need something else that does this job. Sure there is a possibility via Powershell but we like to keep it simple, so we recommend SendEmail (an open source project).

Procedure

Create a new Task in Windows Task Scheduler on the License Server and Let it execute the SendEmail program.

1. Configure the SendEmail program as needed, see the following external tutorial: howtogeek.com/125045/how-to-easily-send-emails-from-the-windows-task-scheduler
2. Add a new Task to Windows Task Scheduler
3. Select to Create Task (not a basic task) in Windows Task Manager

• Give it a name like “Notify on low ThinPrint license count” and select Run whether user is logged on or not.
• Under Trigger select New→ Begin Task→ On an event and choose Custom.
• Select "New Event Filter and then Logged→  Last hour  (otherwise this will always be triggered on an event even if it was days ago), Warning for event level and as event log choose Application.
• Under source put in TP License and User Configuration Service, enter event ID "4".
• Add the new trigger.
• Now under Actions add a new action Start a program and choose the SendEmail program, add the parameters.