I took a quick look and still prefer Thunderbird. Over the years tb has matured enough that it's solid and reliable. All I want from my work email client. For personal stuff, I'd never consider a client, other than the browser.
In the past decade or so (basically since it came out) I've tried Thunderbird 3 times. Each time it lost some of my data. Granted only the first 2 times was I using POP; with IMAP having an e-mail client that completely corrupts and is unable to recover the local mailbox isn't nearly as big a deal, but it still makes me not want to use it.
Even Evolution, which had a history of crashing if I looked at it funny, and seemed to be implemented as a loosely associated group of processes, any one of which could decide to monopolize the CPU and/or disk IO at any point never lost e-mail messages for me.
Did you get it running? I compiled on debian stable and the app runs, but segfaults as soon as i try to read an email. There is really a need for an improved imap client, thunderbird is good but innovation feels like it got stuck.
