Re-generation
However in 2007 after the release of stand-alone browser Netscape Navigator 9, Netscape confirmed that it would once again develop an e-mail client, now named Netscape Messenger 9. The new release was to be based upon Mozilla Mail's successor, Mozilla Thunderbird.
Additionally, after an official poll posted on Netscape's community support board in late 2006, speculation arose of the Netscape 7 series of suites (including the Mail client) being fully supported and updated by Netscape's in-house development team once more, including major bug fixes and security issues.
However, development of Netscape Messenger (and any speculation of an update of Netscape 7) was ended when AOL announced they would end development and support of Netscape Navigator and Netscape Messenger. Support ended on March 1, 2008.
Read more about this topic: Netscape Mail & Newsgroups