From a post here at smays.com in March, 2008:
“On Friday morning, 10 emails are selected at random and forwarded to President Obama’s in-box. He looks through them, picks one and responds –personally– to the sender.”
And the following from the New York Times in April, 2009:
“Tens of thousands of letters, e-mail messages and faxes arrive at the White House every day. A few hundred are culled and end up each weekday afternoon on a round wooden table in the office of Mike Kelleher, the director of the White House Office of Correspondence. He chooses 10 letters, which are slipped into a purple folder and put in the daily briefing book that is delivered to President Obama at the White House residence. Designed to offer a sampling of what Americans are thinking, the letters are read by the president, and he sometimes answers them by hand, in black ink on azure paper.”
If you can find an earlier reference to “my” idea, leave it in the comments. I’m just looking for my props.