Converting over a B4A app that is giving me headaches. The owner of the store wants to be able to send a notification to peoples phones when we're hosting a new sale. He was originally using a mass text message service, but he figured this would work better. I have it working on Android by using a service that checks a webpage and compares that webpage to a copy it has saved. If they match, no new notifications. If they don't match then parse out the new notification information and display the notification. It doesn't appear that you can do services in the same way in B4I, so my question is two fold. I suppose I would need to use MQTT for sending the notifications, is that correct? If that is the case does anyone know of some MQTT server software we can run in house to avoid paying fees for the use of a cloud broker? We have a stable fiber line with plenty of speed that should be more than enough to handle it as well as a hosted VPS that could possibly be used. I would prefer something open source or freeware, but if the only option is commercial then I guess the owner will need to spend some more money on it.