Your searches don't need to persist. Your mail kinda does. And since US law compels US companies to comply with warrants, this isn't possible to do.

How do you propose that Yahoo (a US-based company, subject to US laws, just like Google) do this?

I've always been curious if is it possible for a US C-Corp to be able to change it's country of incorporation from the US to another country? If they do, how is equity handled? Would public companies be able to replace common and preferred stock with ADRs?

This question seems even more pertinent now that there is a Presidential Executive Order that was issued that state that a even the assets of a US company abroad are subject to laws in the US, which strangely puts US companies in a really touch position of not being able to comply with both US and European laws simultaneously.

Start a shell corp in Country B, sell Company A to Company B for cheap!!! Voila, you've just moved your company out of Country A.

Create a service where they are unable to view the unencrypted data themselves.

If they were slightly cheaper I was considering these guys for my personal use.

http://luxsci.com/blog/encrypting-sent-email-an-often-overlo...

Does not seem to be a problem for tax laws...

Somehow, I doubt very much they would pull a ton of users from Gmail with that claim.

Yeah, 99% of the users out there couldn't care less.

Are we pretending that Yahoo wasn't part of PRISM as well?