How can I send a private image via sms to my Flask server?

  flask, machine-learning, python

I am looking to do image classification with my flask server. I want people to text an image to a phone number, let the image be inferenced on the flask server, and then respond to their phone number with a string indicating the results of the inference. Twilio does not work, since it requires that the image have a publicly available URL. Any advice for me on how to complete this task please?

Source: Python Questions