> conversation threading I believe this existed before gmail > gigabyte storage was not a tech problem before > speed in what way? the ui was and still is

> conversation threading I believe this existed before gmail > gigabyte storage was not a tech problem before > speed in what way? the ui was and still is as fast as most lightweight desktop clients > powerful search maybe, although some clients supported powerful search with regex before I think gmail was not that innovative, but it did bring everything together very well, in a very user-friendly way, along with some new-ish stuff like tags and the no need to delete anything.