Does Slack Notify When You Leave a Channel? Leave, Edit, Delete and More

Slack does not send anyone a notification when you leave a channel, but it does post a line in the channel saying you left, and anyone who scrolls past sees it. Workspace owners and admins can turn these join and leave messages off. Even then, Slack still shows when someone leaves a private channel; leaves from public channels are hidden. You cannot turn the message off yourself, so if you want to go quietly from a public channel, mute it instead of leaving. The other actions people ask about: an edited message shows (edited), a deleted message sends no alert, forwarding does not tell the original author, and removing someone from a channel does notify that person.

We tested leaving, editing, deleting and unsending in a test channel of a Free Slack workspace we own on 30 September 2026. The screenshots below are from that test, and the channel was deleted afterwards.

Does Slack notify people? Action by action

Does Slack notify when you leave a channel?

Nobody gets a ping, a badge or an email. What Slack does is post a system message in the channel, "name left the channel" or similar, as its help article Manage join and leave messages describes: "By default, messages are shown when someone joins, is added to, or leaves a channel." In a busy channel, few people will notice. In a small private channel, everyone will.

In our workspace the admin setting for these lines is off. We created a public channel, posted, then typed /leave. Slack moved us to #all-slack, and the channel showed no "left" line afterwards. The "joined" line from when we created it stayed.

What you lose when you leave, from Slack's Leave a channel page:

• • A private channel's messages and files disappear from your search results, and you need a member to add you back.
• • You cannot leave #general (the channel everyone is in).
• • Single-channel guests cannot leave their channel.

To leave, click the channel name in the header, then Leave channel. The command /leave does the same. To clear out many at once, open Manage my sidebar from Home and choose Leave inactive channels.

How to leave a Slack channel without anyone noticing

You have three options, and only one of them is fully silent:

• Mute the channel instead. Click the channel name, then Mute channel, or type /mute. It drops out of your unreads and stops notifying you, and nothing is posted. You stay a member, so you can still find its messages.
• Ask an admin to turn off join and leave messages. In the admin pages, under Settings, then Settings & permissions, an owner or admin can clear Show a message when people join or leave channels. It is there on the Free plan too. With that off, leaving a public channel showed nothing in our test. Slack's own note under the box says the lines still show in some cases, such as small channels and private channels.

• Leave anyway. In a large public channel, the line scrolls away within minutes.

Does Slack notify when you edit a message?

No one is notified. The message shows (edited) next to it, so readers can tell it changed, but Slack does not show the earlier text. If you edit a message to add an @mention, do not rely on it to reach that person; send a new message with the mention. Owners and admins can stop members from editing messages at all.

For a typo you spot right away, Slack can unsend. Right after sending, with the message box empty, press Cmd+Z (Ctrl+Z on Windows) and confirm. The message is deleted and comes back into the box for you to fix. It worked in the web app in our test: at 1 second and at 12 seconds after sending, Slack showed the box below. At 20 seconds, Cmd+Z did nothing.

Does Slack notify when you delete a message?

No. The message disappears for everyone. If it had thread replies, a placeholder reading "This message was deleted." stays with the reply count, as in the screenshot above. Two things are outside your control: a push notification or email already sent may still show the original text on someone's phone or inbox, and people may have read it before you deleted it. Slack calls deleting permanent. Whether admins can still see it depends on the plan and retention settings; see can Slack see deleted messages.

Does Slack notify when you forward a message?

No. Forwarding (Forward message on hover, or Copy link and paste) posts the message into another channel or DM with your optional note. Slack's forwarding help page describes no notice to the person who wrote it. They will see it only if they are in the conversation you forwarded to. If you paste a link to a message from a private channel or DM, Slack asks whether to Show message or Only show link.

Does Slack notify when you remove someone from a channel?

Yes. Slack's Remove someone from a channel page says: "When you remove someone from a channel, Slack will notify that person." By default, owners and admins can remove people from public channels, and members can remove people from private channels. Nobody can be removed from #general.

Does Slack notify when you join a channel?

Members get no notification, but a "joined" line appears in the channel. If admins turned join and leave messages off, joins to public channels with more than 20 members are hidden; joins to smaller or private channels still show.

What else Slack does and does not show

Screenshots, copies and downloads send no notice to anyone, as does Slack notify screenshots explains, and Slack has no read receipts in channels or DMs. People in the same conversation do see "is typing" while you write.

To leave many channels in one go, our leave multiple channels test timed the channel browser, the sidebar menu, /leave and a script.

FAQ

Does the channel owner get notified when I leave?

No. Channel managers get no separate alert. They see the same "left" line as everyone else, when the line is shown.

Does forwarding a DM tell the sender?

No. The sender sees it only if they are in the conversation you forwarded it to.