
Source : https://github.com/binwiederhier/ntfy/
Download :

Ntfy - MyQNAP
ntfy (pronounce: notify) is a simple HTTP-based pub-sub notification service. It allows you to send notifications to your phone or desktop via scripts from any computer, entirely without signup or cost. It’s also open source (as you can plainly see) if you want to run your own. Client and server...

notes :
listen by default in HTTP (16880)
you must edit your config file (client / server) within /opt/Ntfy/etc/
ntfy command line added to NAS PATH
About :
ntfy (pronounce: notify) is a simple HTTP-based pub-sub notification service.
It allows you to send notifications to your phone or desktop via scripts from any computer, entirely without signup or cost. It’s also open source (as you can plainly see) if you want to run your own.
Client and server embbeded (run server by default)