Yes, Slack typically sends a notification via Slackbot to the person removed.
This notification helps ensure transparency about channel membership changes.
If you received a notification like this, it's likely because an admin or another member with the appropriate permissions removed you from the channel.
Slack does not send a notification to the channel when someone is removed from it.
Here are the key points:
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No channel-wide notification: When you remove someone from a Slack channel, there is no automatic message or alert sent to the rest of the channel members.
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The removed user: The person who is removed will be notified that they are no longer part of the channel.
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Member list: Other members may notice that the person is no longer in the channel if they check the member list.