Take Thunderbird, mix liberally with calendaring, instant messaging, and release it on Linux and Windows. What do you get? Spicebird, a collaboration client that remixes Thunderbird to bring the creaking mail client up to date for today's users. Spicebird has been in the works for some time, but the 0.8 release is finally ready for a wider audience. To see if it's ready for everyday use, I downloaded Spicebird 0.8 a week ago and started testing.