Setup Email System for users

[asmr-hex]

Overview

we must be able to do two things:

1. email individual users for important updates (email verification on login, their poet errored, their poet's work is featured in a volume, their poet is a judge, etc.)
2. send out bulk emails for global updates (volume release, monthly updates (?), etc.)

What can we use?

mailgun (10,000 free emails & 100 free validations per month)
mailchimp
usps - thern und taxis

[asmr-hex]

email verification is finished

TODO bulk emails and notifications