I have various small projects and home automation systems that I want to be able to invoke remotely and receive alerts from, without setting up a web server and UI.

I used to use Notify17 for receiving alerts, but since this shut down I've been forced back to email, and am now looking for a solution to cover both receiving alerts and sending basic commands.

These are the options I've considered already:

* Pushover - Fine for receiving alerts, multiple recipients supported. No options to respond to them.

* Telegram - Sending + receiving. Might be a bit heavy for my use case, and would be better not having the bot publicly accessible. Also makes managing notifications (DND etc) more difficult when also receiving human messages.

* Gotify - No iOS app.

* Prowl - Most likely candidate for receiving notifications at the moment unless I find a duplex option

* Now Push - Looks promising, but too early to start developing on

* Threema - Ideal, but relatively expensive ($70 setup + $0.05/msg + $0.05/img)

Essentially what I'm looking for is an app with a chat-like UI which converts messages to a webhook, and allows me to send responses via an API. Ideally preshared key auth, no OAuth.

On a related note, if anyone else is missing Notify17 and thinking about building a replacement I'd be willing to pay up to $15/mo for a tool that ingests webhooks, allows me to reformat the response with a templating language and sends notifications to my phone.