Why Desktop Email Still Makes Sense

All the fuss about Gmail's on-and-off outages on Tuesday garnered quite an outcry from net users, enough so you might think everyone but your Aunt Marge is using Gmail's web interface. PC World runs down Six Reasons Desktop E-mail Still Rules. Among those we (admittedly Gmail-positive) can relate to: better filtering and rules, drag-and-drop attachments, and the "Redirect" command. What advantages does your desktop client have over webmail?