What's the best SMS IT support alerting system?

What does everyone use to send SMS alerts to employees for things like server alerts, planned downtime, that sort of scenario? Do you go to an SMS provider, buy the credits and then make your own sending system (or hook in to their API)?

Or do you use the gateway provider’s sometimes rather rubbish system to send?

Or is there a really swish third-party system you recommend taking a look at?

Posted via email from MIR Live