Pushover allows per-message sound settings, so you could configure just alerts from your monitoring to play a sound and send at priority 2 which will bypass your device's quiet settings and repeat to wake you up.
On Android, Pushover is able to (optionally) play notification sounds for high-priority messages through the alarm channel like an alarm app would, so it can bypass the device's mute switch.
You can encrypt notifications that go through Google's FCM and Apple's APNS push notification servers. This is how Pushover works - each notification is encrypted with a device-specific key, sent through the notification servers as an encrypted blob, then the app on the device is woken up and receives the blob, decrypts it, and posts it as a normal notification.
Just to clarify, Pushover is not a "paid service" in that you need to pay for a subscription. You only have to pay once to use it past the 7-day free trial.
How bizarre... I thought this was going to be about the new Power Nap feature of Mountain Lion that continues to talk on the network while the laptop is suspended.
Also, if you're relying on e-mail obfuscation and other tricks (that usually just make it harder for legitimate people to contact you) to prevent spam from getting to your inbox, you really don't understand spam.
I'd love it if a moderator would post something when they change a title so it's clear what happened and who did it, but it would probably generate a lot of useless meta threads debating the change (and of course, it would actually reveal who the moderators are).
That is false. I've had titles of my own submissions changed by someone else, and as the submitter of the Light Table link replied in that thread, he or she did not change the title, either.
The new ASUS Zenbook Prime (UX21A 11"/UX31A 13") models that were announced last month have similar specs to the new MBA (Ivy Bridge, up to 256Gb SSD, etc.) but are both available with 1920x1080 IPS screens. I had the original UX21 and sold it because the keyboard was not so great, but from the reviews of the new models, they have improved the keyboard and trackpad.
Users would have to purchase the Pushover app. It sounds like you want https://parse.com/ which would be an SDK you can integrate into your app to get push notifications.
I don't really have much experience in the way of sales and marketing, but my integration efforts so far have just been to setup Pushover applications with icons ahead of time and then e-mail admins with the API key and some explanation so they don't have to do much work. I did the Github integration and Adium plugin myself to increase visibility.
I went with $3.99 because Prowl is $2.99 and Notify My Android is $3.99. I'm not convinced that a yearly service is worth the overhead and I personally wouldn't pay to use a notification app that had a yearly fee.
The bandwidth and server overhead for running such a service are pretty low and iOS/Android push notifications are free, so I'm not really worried about monthly costs for normal users outweighing the revenue the app brings in. Right now Pushover is running on one of my servers that does other things, so it's not even really costing anything tangible. If costs start to go up, I can always increase the price of the apps to slow growth (or increase revenue if it doesn't slow growth).
https://pushover.net/api#sounds
https://pushover.net/api#priority2