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Slack’s quest to replace email is getting more competitive

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Social Network applications including Facebook, Instagram, Slack, Snapchat, Twitter, Skype, Viber , Teamsnap and Messenger, are on display on a smartphone on March 21, 2018 in Washington DC. / AFP PHOTO / Eric BARADAT (Photo credit should read ERIC BARADAT/AFP/Getty Images)

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Slack has gone public, and now boasts 10 million daily users. But is it any closer to replacing email? Plus: Marvel's plan to follow "Endgame" and why people choose #vanlife.

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