This looks great - perfect for the site that doesn't need 1-minute monitoring. Montastic has been ok for this purpose but I'm happy to try something else.
My feature request - 140-character SMS messages when you're down.
That could be a possible feature for paying customers. I'm not shelling out lots of money for a good international SMS broker before I know that it can break even.
For now you can use your mobile provider's Email-to-SMS gateway (if such are provided).
For now you can use your mobile provider's Email-to-SMS gateway (if such are provided).