Hey all!
I thought you might be interested in this article by Benjamin Mako Hill
regarding the topic at hand.
Google Has Most of My Email Because It Has All of Yours:
http://mako.cc/copyrighteous/google-has-most-of-my-email-because-it-has-all-of-yours
I use posteo which is fully LibreJS compliant.
https://posteo.de/en
Here is the FSF's take on email clients:
https://www.fsf.org/resources/webmail-systems
I also use riseup b/c I have been with them for a long time though I am not
sure where they are on the libre/free software side of things.
https://help.riseup.net/
Hope this helps!
