thunderbird

The ThunderBrowse Thunderbird extension adds a URL bar to the Thunderbird interface, thus allowing you to be able to view Web sites without having to open browsers.
ThunderBrowse is a unobtrusive because it doesn’t require you to add any more buttons to your toolbar, as it adds to the message preview pane without taking up [...]

MozBackup is a simple utility for creating backups of Mozilla Firefox, Mozilla Thunderbird, SeaMonkey, Mozilla Suite, and Netscape profiles. It allows you to back up and restore bookmarks, mail, contacts, history, and extensions.
[877K] [Win95/98/ME/2k/XP/Vista] [FREE]