Stella Artois has launched a Christmas "Send a Card, Save a Tree" campaign that lets consumers send a free, branded, beer-themed augmented reality Christmas eCard.

The save-a-tree bit comes in with Stella Artois "securing the future of a rainforest tree" in the threatened Atlantic Rainforest for every card sent, with the goal saving one million trees before Christmas Day.

The Stella Artois eCard can be sent from and can be personalised with a message - see the video above for a preview.