simple-keyboard VS Gotify

There is also another Simple Keyboard, not from SimpleMobileTools, which i like better.

Simple Keyboard (version 5.13): Simply keyboard and nothing more

Surely if you're asserting that all the posts ends the way you describe, there wouldn't be cases like Simple Keyboard, that got banned and then Google acknowledged they were wrong, or Pocketwood being banned and then reinstated.

Simple Keyboard - Less than 1 MB in size & very easy to copy-paste the content.

Simple Keyboard, a keyboard that is great at being a keyboard and nothing else. No spell checking, no suggestions, no swiping, no superfluous permissions, no bloat, no tracking. Because the simple life is the best life.

Maybe this could be helpful for you. https://github.com/rkkr/simple-keyboard

I use apprise with Gotify

You can self-host a notification service using https://gotify.net/ for example, but you may need to ask the user to disable battery usage restrictions if you don't want the OS to kill the background process.

If you do not need the state tracking, but instead need something that can deliver push notifications to you, check out ntfy and gotify

Gotify (version 2.5.1): A client for receiving push notifications

I've found Gotify to work well for that

Just FYI - there's also shoutrrr and gotify with similar functionality. I've tried them, they're very good, but not fitting my (very humble) needs.