Email when missing input for certain time

Is it possible to have an email send when input is missing?
I have an external emon sending data by tcpip. Sometimes my emon fails and then it would be good to have an email created by emoncms
I already setup my pi for email and
echo “Hello world email body” | mail -s “Test Subject” [email protected]
gives me mail.
Question is how to make emoncms to send a mail when loosing input?

Hi Jan,
You could install the Task module and create a task that will send you an email if the last update time is greater than a certain amount of seconds.