Can I replace Twilio with X as the backend for OpenVBX?
OpenVBX is released under the Mozilla Public License and you are free to modify the code under the terms of the MPL. However, OpenVBX relies heavily on Twilio’s phone and SMS APIs to provide a reliable user-friendly experience. Twilio will be working to improve OpenVBX and adding to it as we improve Twilio’s core APIs. If you replace Twilio as the backend, you lose the functionality and reliability provided by the Twilio platform and will miss out on the improvements we have planned over the coming months and years.