Eine sinnvolle Empfehlung von Timothy Ferriss für eine effizientere E-Mail-Nutzung:

E-Mail communication should be streamlined to prevent needless back-and-forth. Thus, an e-mail with “Can you meet at 4:00 P.M.?” would become “Can you meet at 4:00 P.M.? If so…. If not, please advise three other times that work for you.”

(Ferriss, Timothy: The 4-Hour Workweek)