I stumbled across this Wikipedia article earlier this week while doing some other research on Netscape. I thought this was interestingâ€¦
Netscape Mercury is a standalone e-mail and news client in development by Netscape. Announced on June 11, 2007, the program is intended to accompany the web browser Netscape Navigator 9, and is based on Mozillaâ€™s Thunderbird. The software is named after the ancient Greek god Mercury, the messenger. It replaces the former Netscape Mail & Newsgroups client included in versions 4 to 7.2.
I guess Netscape is trying to get back to the all-in-one web browser, instant messenger, e-mail client, etc. Seems like all these other internet companies (Flock for example) are basing their software of the Mozilla equivalents. I suppose it is better than say basing it off of MS Outhouse Outlook!