Sigh when will people finally wake up and understand that Google, Yahoo or Facebook are Advertising companies. Anything that isn't affecting their really big clients in advertising isn't getting any sophisticated support and even that area of business might be maltreated in respect to professional support. And don't be shortsighted here. IT absolutely -needs- support. So if you really wanted professional support for emailing you have to go to a tech company that doesn't earn a living with selling your Browsing history to other parties or worse.
In case of an email product I did not find anything yet that would serve my professional needs. The only really 99% reliable thing yet has been renting a root server (or using my own machine with DynDNS) with a nice swell Postfix/Dovecot install. The Internet was invented as decentralised, if not even distributed technology. Buying in (you buy with your cookies) a centralised technology like FB, Google or Yahoo, even if they are in the cloud or in the edge - it's still one vendor, for me was always against the economical philosophy of the Web.
If you don't have the knowledge how to set up a distributed email node (if you allow me calling it that way), I would recommend lavabit.com, they are reliable and non-commercial (However also subject to the patriot act b/c located in the US).
And not only the Internet with its industry-raped non-standard HTML language, its ridiculous insufficient Border Gateway Protocol or its patchwork 7bit/8bit e-mail MIME protocols is one heck of an enormously cool hack, also the Web can be nowadays.
If you don't get any support from cookie traders like Google or even Ghostery, why don't go self-made and install a distributed Social network like GNUSocial? The Internet used to be a business opportunity for everyone, don't let it get destroyed by monopolies, that block inventions with 15 year-old patents.