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Show HN: A tool to mass-leave Slack channels

JustSkyfall Monday, December 08, 2025

I'm part of the Hack Club community Slack [1] and managed to get myself into over 700 channels. Then the ping overload was very much starting to get to me (especially since channel managers can do @channel pings in their channels!), so I built this tool to mass-leave channels in the terminal. Amongst other things, it allows sorting by 'last read' times, filtering out private channels, searching channels, and much more.

[1] https://hackclub.com/slack

Summary
This article provides a script that allows Slack users to leave multiple Slack workspaces simultaneously, without the need to manually leave each workspace individually.
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