Create a Flask app to send email with Twilio SendGrid

This tutorial explains how to deploy a simple Flask app, to send an email using the Twilio SendGrid Python SDK, on Heroku.

1. Create a Twilio SendGrid API key at https://app.sendgrid.com/settings/api_keys
2. Go to https://github.com/swapagarwal/sendgrid-flask-heroku
3. Click on Deploy to Heroku button, and follow the instructions.

That's all. You'll be sending your first email within seconds!