Slack's Stewart Butterfield says email is 'the cockroach of the internet' and we'll be living with it for the next 30 years

has one massive positive side effect on your working life: It reduces the amount of internal email you receive from your colleagues.

Once your company is on Slack, gone are the reply-all emails where someone just says "Thanks!" Those crushing inboxes full of dozens, hundreds or thousands of unread emails, seem so much less urgent when your company is on Slack.

And you've probably also noticed that the Slack mobile app has a superior direct-messaging experience compared with many consumer apps that only do messages.

But Slack founder Stewart Butterfield, speaking at Web Summit in Dublin on Tuesday, said those of you hoping that Slack will kill off email altogether might have a long wait.

"Email will be the cockroach of the internet," he said, when asked whether Slack will kill email. "I think we've got another 30 or 40 years of email left."

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