1) Heineken launched a "Date in a Box" marketing campaign for Valentine's Day, where they hid mystery dates in glittery red boxes and gave codes on social media to unlock the date. 2) The campaign aimed to get attention from their target customers of women and men aged 21-30 around Valentine's Day. 3) Heineken strategized a cross-platform digital campaign on Twitter and Instagram to create excitement and emotional resonance around the mysterious gift boxes.