Windows E-mail Clients

For the past few years, I've used webmail exclusively. However, with approximately a half dozen e-mail accounts now, I'm strongly considering moving back to using a desktop e-mail client to keep my e-mail better organized. The last desktop e-mail client I used was Thunderbird, which is now dead. Before that, I used The Bat! It's been nearly seven years since I last used The Bat!, but I see that it is still updated. Are there any other Windows e-mail clients I should look into, or is The Bat! still considered one of the best?