ntfy: Send Push Notifications to Your Phone via a Simple PUT/POST URL

Ntfy – open-source Push to Mobile

ntfy is an open-source, HTTP-based pub-sub notification service that lets you send push notifications to your phone or desktop from any script or app using a simple PUT or POST request. It supports priorities, action buttons, tags, emojis, and file attachments, and integrates with tools like GitHub Actions, Home Assistant, and Uptime Kuma. You can use the free public server at ntfy.sh, self-host it, or opt for paid plans with more features.