Listic is correct. We (Twilio) do not support international SMS on accounts by default. We are currently offering it in beta. However, after a quick email to Sandeep just now, I turned it on for his account and you should be able to test International SMS on Phoneify now. Reminder: it is currently in beta, so there may be some deliverability issues in countries that don't have great coverage. Let us know so we can make it better.