How show notification in HTML

how to receive notifications in HTML

Currently I receive notifications in plain text

image

but I would like to receive notifications like that

Use notification plugins like the ones from the Linuxfabrik monitoring plugins.
https://github.com/Linuxfabrik/monitoring-plugins/tree/main/notification-plugins/notify-host-mail
https://github.com/Linuxfabrik/monitoring-plugins/tree/main/notification-plugins/notify-service-mail