NBC has brought online this promo for its upcoming “Heroes” Webisodes titled “Going Postal” that kick-off on July 14th. The three-part series kicks-off with “A Nifty Trick,” with new episodes rolling out on subsequent Mondays. It features Echo De Mille, a seemingly ordinary mailman with an extraordinary ability. Visitors to this year’s Comic-Con, will get a sneak peak at the epic conclusion at the “Heroes” panel on Saturday, July 26.