Earlier quoted context omitted.
How about we popularize encryption, and take the choice out of the hands of corporations and governments?
That's why I did this; https://github.com/etherael/phoneme It's not perfect, but I think the first step to widespread crypto adoption is getting people accustomed to the workflow of fully encrypted email. Phoneme + mailvelope is not a huge jump from the current gmail experience and just that initial taste might be enough to get more people on the right track.
If we basically know several governments already have copies of your historical gmails, and you're not securing the incoming channel (which we basically know has a beam splitter on it), what good does encrypting the historical files do?