Have you ever been in the loop of the Reply-All Mail and it is not related to you?
Have you ever experienced “Exceed disk quota” pop up?
Have you ever been incorrect recipient?
Have you ever received too long/short email without the clear message?
Have you ever spent times dealing with the emails rather than other productive works?
Have you ever received no/delayed response, so you need to call?
Have you ever been asked for the information you email out already?