Chase ran the same $400 checking bonus offer through two different shared mail (co-op) companies in the same week: Save and Valpak. Both are competing vendors that bundle multiple advertisers into one mailing to split the postage cost. Piece 1 - Valpak Arrived inside a Valpak envelope. Chase bought the envelope's own front and back cover ($400 offer on the front, refer-a-friend on the back) plus one of three Chase inserts riding inside, the other two promoting Business Checki