PushAlarm is a great system to receive notification and Alerts from your smarthome-system, your servermonitoring system or from your IoT-device. You can send your notification and alerts to a group of users. To send a notification you actually need to send a https-request to our backendservice. How to create the link is explained in the manual section of the app. PushAlarm includes a group-management-system, which allows to create notification-groups. Alerts are not send directly to users, but to the group and therefore forward to each individual member of this notification group. To do so, you need to apply for a grouptoken, which needs to included in the URL of the Web-API. The grouptoken can be obtained by the group owner via a easy to use Webinterface. Within the app you can login with your useraccount or directly create one, if you are new user. As soon as you are logged on to the app, you can create groups or subscribe to groups of other PushAlarm users. Subscriptions for groups of other users need the confirmation of the group owner. The group owner itself can always manage the membership to its own groups.