The exchange by e-mail is more intimate than conversation - you allow yourself to say things you otherwise wouldn't.
“I work really long hours and work a lot and have done press tours and junkets, but there is nothing like a presidential campaign that I have experienced before...I think at one point we visited three different cities in one state in 12 hours. It's exhausting.”
“So we are now still dependent on foreign oil, have a problem with global warming, and are losing jobs rapidly to the Japanese in fuel-efficient vehicles as a result of that very shortsighted progress.”