Add automated confirmation email

[EiffL]

As requested by the committee, we need the registration server to send a confirmation email upon completion of the registration. We didn't have that feature before because we relied on the payment confirmation email.

I'm pretty sure Heroku has a service for that, otherwise the question is simply: how do I easily send an email from python?

[EiffL]

This might be the answer:
https://devcenter.heroku.com/articles/sendgrid#python

[EiffL]

grrr you have to deposit a credit card number to use this... too bad because the python API is super easy:

import sendgrid
import os
from sendgrid.helpers.mail import *

sg = sendgrid.SendGridAPIClient(apikey=os.environ.get('SENDGRID_API_KEY'))
from_email = Email("[email protected]")
subject = "Hello World from the SendGrid Python Library!"
to_email = Email("[email protected]")
content = Content("text/plain", "Hello, Email!")
mail = Mail(from_email, subject, to_email, content)
response = sg.client.mail.send.post(request_body=mail.get())