CrowdFlower/valid_email — pull request #3 by brenthaas (2014-06-30 22:25:52+00:00)
Title: [MAKE-1581] Block free email domains from signing up

@StephenCharles @maj

## Overview
* We want to keep people with a free email address from signing up for an account

## Related Links
* [[MAKE-1581](https://crowdflower.atlassian.net/browse/MAKE-1581?filter=-1)