Ntfy
From wikinotes
A self hosted pub/sub server wtih a complementary FOSS app that will issue push notifications.
Documentation
home https://ntfy.sh/ github https://github.com/binwiederhier/ntfy ios app https://github.com/binwiederhier/ntfy-ios android app https://play.google.com/store/apps/details?id=io.heckel.ntfy
Install
pkg install ntfy # FreeBSD
Usage
curl \ -d "Backup successful 😀" \ ntfy.sh/mytopic