I agree this would be an improvement if we can do it -- it was a bit of an oversight to leave that column as "Sender" when "Recipient" makes more sense. I'll add it to the list.

is a disaster for anyone who uses DU mail very often. And the recipient doesn't show on the sent email when you click on it, either, unless an email it's a reply to has been left in the text.

Having the date mail is sent on there would be very helpful, too.

Since "Title Is Required," you have to put something there anyway.
Then, when you open the sent mail, the recipient and the date would be displayed.