Almost half a century has passed since Ray Tomlinson sent the first e-mail in 1971. A technology for a few nerds has gradually become a mass phenomenon at the latest since the 1990s. Today, the average employee receives or sends more than 100 e-mails per day(!). So it’s no wonder that many see e-mail as a burden and even large corporations like Atos have gone so far as to completely ban internal e-mails and thereby getting more done. There is much to be said for such an approach: constant distraction through e-mails, an increasingly unfavourable signal-to-noise ratio of the information transmitted, but also the often neglected area of knowledge management. And so the mailboxes become digital mass graves of knowledge.