/mute
In Slack
Mutes or unmutes a conversation.
Where you type it
In the Slack message box.
Add
Optional: #channel. Leave it off for the current one.
Example
/mute #random
A few built-in commands (like /archive, /rename, /remove) can be limited to owners and admins. A real command built into Slack, checked against its own help pages in November 2026. Official help page
In Teams
Mutes the current chat. /unmute turns it back on.
Where you type it
In message box.
Before you start: Teams desktop app only. Your organization can turn some commands off.
Add
Nothing else needed.
Example
/mute
Microsoft says built-in slash commands work only in Teams desktop. Most work in the message box; /chat works only in the search bar. A real command built into Teams, checked against its own help pages in November 2026. Official help page