Twilio is getting better but still doesn't cover everywhere. We use Telesign ( http://www.telesignmobile.com/ http://www.telesignmobile.com/ ) for our internat

Twilio is getting better but still doesn't cover everywhere. We use Telesign ( http://www.telesignmobile.com/ http://www.telesignmobile.com/ ) for our international clients, except for Thailand where we use SMSThai ( http://www.smsthai.net/ http://www.smsthai.net/ ). The international SMS situation currently kind of sucks.