* Progress
* Send and receive emails in py3 using GAE legacy libraries.
* No need to run py2 unit tests when there are none
* Addressed review comments.
* wrote code
* Simplify and add tests
* Revert unneeded file
* Revert unneeded file
* Addressed review comments
* Made code more robust during unit testing
* Mock the needed response code
* Upgrade from GAE taskqueue to Google Cloud Tasks.
* added unit tests
* Add link to Monorail file that I referenced.
* Add grpcio to travis build
* Try installing grpcio locally first
* Try installing grpcio via sudo
* Try a smaller set of deps for travis.
* Debug travis config
* Avoided missing imports while running unit tests on travis
* Removed travis debugging lines