Synology's Security Station will 100% notify you. https://www.synology.com/en-us/surveillance/feature/mobile https://www.synology.com/en-us/surveillance/featur

Synology's Security Station will 100% notify you. https://www.synology.com/en-us/surveillance/feature/mobile https://www.synology.com/en-us/surveillance/feature/mobile Synology + a cheap RTSP camera and it has all the features OP requires.