Currently I'm running with it sending alert emails to my email address, and then also to Pushover
Since I'm using Office 365 to send the emails, and then I'm getting them in an Office 365 mailbox in the same tenant, the emails are pretty much instant. Only downside is all of it relies on the internet. So I added the BI Push notifications to the list but disabled them. If we get a week long power outage and the internet goes off, I should still be good
I might look into Telegram though, since I already use it for chat too, Thanks