I use both gmail and hotmail (or outlook.com now) and the titlebar in this case is the same as in gmail: it has the user-name of the person logged in, the "options" (gear icon), the send/reply/delete/new-email buttons. And actually with gmail the interface has the google logo and search input above the title-bar taking up an extra ~100 pixels.
One important reason why I am glad about Outlook.com as an alternative.
Not only is it getting harder and harder to read emails on a Netbook screen (there is almost no space left for the actual message), it is also getting painfully slow.
Gmail now loads and runs to much Javascript that my poor little Netbook can't even scroll smoothly anymore.
After playing with Outlook.com a bit, it seems much faster than Gmail.
Since Marissa Mayer is now at Yahoo, I expect a much improved Y!Mail soon.
