Everybody can send a written or spoken message via Facebook messenger. Include the name and the address of the addressee and the MIVB will do the rest.
Watch MIVB’s video on YouTube (Dutch):
“Let Brussels buzz with love! Send your message in writing or as a voice recording to @MIVB via messenger, mention the name and address of the addressee and the bus will deliver the message. Brussels, that’s all of us”.