Abusive-message alerts
When Cosy detects abusive language in a public channel, it notifies the nominated workspace admins or owners by DM so they can review the message promptly.
Lightweight moderation for Slack communities
Slack moderation bot for safer community conversations
Cosy flags abusive messages and duplicate posts in public Slack channels, then sends a direct-message alert to the workspace admins or owners you nominate. Your team keeps control of what happens next.
Up to 250 community members free. No credit card required.
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Moderation alert
A duplicate public post may need review.
Cosy noticed matching content in a public channel and privately alerted the admins you selected.
Duplicate postHuman review needed
Review in Slack
Catch the posts that need a human decision
Two useful Slack moderation alerts
Cosy focuses on the recurring problems that can damage a busy community while nobody is watching.
Duplicate-post alerts
Repeated public posts can be a sign of spam. Cosy surfaces duplicates to your nominated moderators instead of leaving you to spot them by scrolling every channel.
A simple, human-controlled workflow
How Cosy’s Slack moderation bot works
Set it up inside Slack and choose exactly which checks and people should be involved.
- 1
Switch on the alerts you need
Enable abusive-message detection, duplicate-post detection or both.
- 2
Choose who should be notified
Select the Slack workspace admins or owners who should receive moderation alerts.
- 3
Review the DM from Cosy
When a relevant public post is detected, the nominated people receive a direct message from the Cosy bot.
- 4
Decide what to do
A human moderator checks the context and takes any appropriate action in Slack.
Clear limits, no inflated promises
Alerts—not automatic enforcement
Cosy does not automatically delete messages, ban members or make the final moderation decision. It flags relevant public posts and alerts the people you nominate.
- Public Slack channels only—not private channels or direct messages.
- Two focused checks: abusive messages and duplicate posts.
- No enterprise compliance, investigation or content-retention tooling.
Choose the level of moderation you actually need
Cosy moderation alerts versus Slack’s native controls
| Capability | Cosy | Slack native controls |
|---|---|---|
| Detects relevant public posts | Flags abusive messages and duplicates | Relies on an admin finding or receiving a report about the thread |
| Alerts moderators | DMs nominated workspace admins or owners | Provides controls to content admins once a thread is identified |
| Takes enforcement action | No—your moderator decides | Enterprise content admins can pause replies or hide a thread |
| Broader community workflows | Also covers onboarding, introductions, directory and highlights | Slack provides the underlying workspace and administration tools |
Slack documents its native thread-moderation controls for Enterprise subscriptions in its official Help Centre.
Moderation is only one part of the job
Manage more of your Slack community with Cosy
Cosy is built for community managers who want fewer repetitive jobs—not another dashboard for members to learn.
- Automated onboarding DM sequences
- Recurring one-to-one member introductions
- A searchable member directory inside Slack
- Most-engaged and unreplied-message highlights
Slack moderation bot FAQs
Does Cosy automatically delete Slack messages?
No. Cosy alerts nominated workspace admins or owners, who review the context and decide what to do in Slack.
Which Slack messages can Cosy flag?
Cosy can flag abusive messages and duplicate posts in public Slack channels. It does not scan private channels or direct messages.
Who receives Cosy moderation alerts?
You nominate the Slack workspace admins or owners who should receive direct-message alerts from the Cosy bot.
Is Cosy only a moderation tool?
No. Cosy also provides automated onboarding, recurring member introductions, a searchable member directory and content highlights inside Slack.
How much does Cosy cost?
Cosy is free for communities with up to 250 members. The Pro plan supports unlimited members for $49 per month or $490 per year, with a 30-day trial and no credit card required.
Compare your community-management options
Keep the human judgement. Lose the endless scrolling.
Add lightweight moderation alerts to your Slack community
Install Cosy for free with up to 250 members. Every plan also includes onboarding, introductions, a member directory and content highlights.
Install Cosy to Slack