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Is Stewart Butterfield a Billionaire?

Who is Stewart Butterfield Daniel Stewart Butterfield is a Canadian billionaire businessman, best known for co-founding the photo-sharing website Flickr and the team-messaging application Slack. Stewart Butterfield is the cofounder and CEO of team-based messaging software Slack. In July 2021, cloud software giant Salesforce acquired Slack for $27.7 billion in cash and stock. Slack, which […]