In India, the SMS deliverability is very good. Thanks to fierce competition between "bulk-sms" companies. I personally use a simple, non-nonsense service http:/

In India, the SMS deliverability is very good. Thanks to fierce competition between "bulk-sms" companies. I personally use a simple, non-nonsense service http://smsplatter.com/ http://smsplatter.com/ and have been lucky enough to get mission-critical alerts (from servers) delivered every single time.