Everyday I read, slashdot.org. So when the IRS and Clinton E-mail debacles happened, the Slashdot community exploded. When the people involved had to speak in front of congress, I was able to have short videos of everything one should not do in the world of IT management and/or oversight. Because either there was no management or oversight, or it was beyond incompetent. I realize that the people in question probably deleted email in order to hide something, however, the IT systems were not designed to properly archive or prevent permanent deletion. I am an amateur compared to the people running these systems, and I make it very hard for people to delete data and/or access logs.
Get some snacks and a drink, and prepare to be entertained by Mr.Chaffetz.