Have you looked at the documentation before posting this question? The functionality you are asking for is already available in Traccar.
Hi Anton
I had, my apologies must have missed it - just upgraded our server that was running version 3 - will go and read again. I see some great improvements already!!!
Nick
Hi
Any plans to implement http/api calls for SMS notifications rather than SMPP? It would open up a huge range of notification options
Nick