For those wondering about the technical aspects of this decision take a look at this thread: http://getsatisfaction.com/twilio/topics/international_sms-1...

When we launched the Twilio SMS Beta we tried hard to support sending SMS messages to both US and International destinations. When there were problems, we worked with our customers to collect forensic data on hundreds of carriers worldwide and pass it to our carriers partners to debug.

At Twilio we are dedicated to working with top quality carriers and technology. After months of working to fix problems, were not able to deliver the reliable International SMS service our customers have come to expect.

We apologize for any problems this has caused for our customer and we'll work to bring back International SMS service after were able to deliver on the quality we do the rest of Twilio services.

Cheers, -Evan

CTO and Co-Founder