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.