[kuroir]

Doesn't the icons on the bar limit the amount of accounts the user can have?

Also note that Apple has some kind of regulations (and they're very strict) regarding the UI.

I personally love the fact the docked mail listing expands to the right since I have a dual 27'' setup. So it would make me sad if they changed this.

The preview part basically breaks what Gmail has polished over the years, and to me it doesn't feel that useful to have the title on the messages, since most of them are RE:

I like the easier access to "tags"; but I'm concerned that the approach you're using would become problematic since I have many tags (I'm a gmail power user who gets around 50 mails avg. which get filtered through different tags via regexp).

But overall good job! I like when people expose their ideas. It's a good way to get lazy people like me to debate on decisions.

Kudos.