I am sure I saw this as a thing, but either forgot to take a note of the name, or had a dream about self hosting this (because I'm just that sort of exciting guy ;-) )
Is there a “messaging/notifications gateway” service, which I can run as a docker container, open a web page to configure different destinations (eg slack, discord, signal, whatsapp, mqtt, etc), then post messages to that and some logic (tags, client key)sends the message to my endpoint(s)?
@matstace mailrise which uses apprise allows you to send an SMTP message and then can forward it to anywhere apprise supports, most platforms.
@stevenhorner That's not what I had in mind (I was definitely thinking of a web app), but having had Apprise mentioned elsewhere, this looks like it will also have a place in my stack, because SMTP to notifications is definitely useful.