Get yourself a Python virtual environment.
Install dependencies:
pip install -r requirements.txt
Copy environment_template.sh and set the values yourself.
./send_inbound_message.py [content of message]
Requires a template to be set up and its id set as an environment variable.
send_file_by_email.py [email address to send it to]
Requires a phone number to be set as an environment variable.
./send_sms_from_template.py [template id]