Slack Message Deleter

FREE and deletes ALL of your messages, including those in threads

Wipe every message you’ve ever sent in a Slack channel or DM — including thread replies. One click. The only tool that does both. Ever scrolled back through an old Slack channel and cringed? Typos, hot takes, messages meant for another channel, or just years of clutter you'd rather not leave behind? Slack won't let you clean that up. There is no "delete all" button — your only option is deleting messages one by one, click after click after click. For a channel with hundreds of messages, that's an afternoon of your life you'll never get back. Slack Message Deleter gives you that afternoon back. Open any channel or DM in Slack, click the extension, and hit delete. The extension finds every message you've ever sent in that conversation and removes them all automatically while you go grab a coffee. A live progress bar shows exactly how many messages were found, how many are already gone, and how many were skipped, so you always know precisely where things stand. And here's what makes it truly different. Every other bulk-delete tool has a dirty secret: they miss your thread replies. Delete a parent message and your replies live on, orphaned inside threads that nobody can find but everybody can still read. Slack Message Deleter is the only extension that hunts down your replies inside every single thread and deletes them too. It even removes replies before their parent messages, so nothing is ever left stranded. When we say it deletes everything, we mean everything. It's also built to be smart and safe in real workspaces. The extension deletes only your own messages — your teammates' words are never touched. It handles channels with thousands of messages by processing them in batches, and it automatically respects Slack's rate limits with intelligent retries and backoff, so you won't hit errors or trip alarms. A clear confirmation step means you'll never start a deletion by accident, and if you change your mind mid-run, you can cancel at any time. Your data stays yours, full stop. There is no sign-up, no external server, and no data collection of any kind. The extension runs entirely inside your browser and talks directly to Slack using your own existing session — exactly as if you were deleting the messages yourself, just a thousand times faster. Nothing you type or delete is ever sent anywhere else. Getting started takes seconds. Open app.slack.com and navigate to any channel or DM, then click the Slack Message Deleter icon and it will show you the conversation it's ready to clean. Click "Delete My Messages," confirm, and watch the progress bar do in minutes what would have taken you hours. Whether you're leaving a job and tidying up before you go, clearing personal chatter out of work channels, wiping old DM history, or you're simply a privacy-conscious professional who doesn't want a permanent transcript of every thought you've ever typed — this is the tool that finally makes it possible. And if you've ever typed "wait, wrong channel," you already know why you need it. One quick heads-up: deletion is permanent. Slack has no trash bin, and that's the whole point. The extension asks you to confirm before it starts, and it only ever removes messages sent by you. Your words. Your history. Your call. Install Slack Message Deleter and take back control of your Slack footprint — threads and all. Note: This extension is an independent tool and is not affiliated with, endorsed by, or sponsored by Slack Technologies or Salesforce.