The way I look at it is, if I use free e-mail services, I don't send confidential information. Who cares if they want to mine my porn, junkmail and quick "hi" e-mails. They can even mine my e-vites and forum newsletters. About the only thing private in my current junk e-mail account may be the odd password where I have signed up for this or that forum.
Keep your confidential in a confidential location.
The bottom line is, nothing is for free. You always pay for it somehow. In this case... you pay with content and statistics collection.
The three most feared words in racing, "Powered by Honda".