Just as we have tabbed browsing, it would be nice if mail windows (reading messages, composition, and mailboxes) could be opened in tabs rather than windows. Though Eudora is MDI, it also has a set of buttons along the bottom of the window which bring their cooresponding child window to the front. When all child windows are maximized, this works functionally as tabs. I can't see it being too difficult to migrate the browser code over to mailnews. We could hold off on tabbed mailboxes if necessary.

See also bug 161051 *** This bug has been marked as a duplicate of 196760 ***

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