You are probably right. But they don't even need everything. If you take a look at https://illuminus.io/en/ you can find out what they already know about you based on just a few old facebook clicks. Wrote a post about it. https://steemit.com/conspiracy/@herrleeb/they-know-more-about-you-than-you-do-yourself
A few encrypted emails are not going to save my ass :)