If you’ve ever wondered what sort of technical wizardry would be behind the downfall of the world’s most pervasive medium, Cal Henderson is the right man to ask. Cal is the Co-founder and Chief Technical Officer of Slack – a team collaboration tool that has been dubbed by almost every major publication as ‘the email killer’. And in November he’ll be one of the tech innovators revealing his secret to success at Momentum – our new event for New York. While email is still putting up a fight, Slack has completely transformed the way entire companies work (including here at TNW), earning it…

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