We're too focused on Web results right now to take up email. We appreciate the support for such a service but it's not currently on our radar.
For more privacy-oriented mail, check out Neomailbox, RiseUp, ProtonMail, Lavabit or CounterMail. You might also like FastMail — it's not private in the same way but you might like the company a bit more.
Also, you can check out this article from the Electronic Frontier Foundation on setting up anonymous email.