MATLAB code to send SMS from Voip.ms?

Christopher Stapels posted some MATLAB code to send SMS texts from Twilio. It works great and I have been using it. But I already have phone numbers at VOIP.MS and they have an API that allows sending SMS. But I have got nowhere trying to get it to work with MATLAB, POSTMAN or Python code. But I am just a hack anyway. Has anybody tied using the VOIP.MS API to sendSMS?