Auto-close Slack DMs from webhooks
Your support system marks a ticket resolved. A webhook signals Notis, which closes the corresponding Slack DM, keeping your sidebar clean and focused on active conversations without manual cleanup.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Close conversation channel
Closes a slack direct message (dm) or multi-person direct message (mpdm) channel, removing it from the user's sidebar without deleting history; this action affects only the calling user's view.
Why this helps
Old Slack DMs clutter your sidebar; manually closing them is tedious and easy to forget, making it hard to focus on current conversations.
- Keep Slack DMs clean automatically
- Reduce sidebar clutter from closed conversations
- Maintain focus on active communications
- Streamline conversation lifecycle management
Setup
Build it in a few focused steps.
- 1Connect Slack to Notis
- 2Create a new automation with the prompt: 'When an external system sends a webhook indicating a conversation is resolved, close the corresponding Slack DM'
- 3Choose the trigger: Notis Webhook
- 4Notis provides the webhook URL to configure in your external tool
- 5Test by triggering a webhook and verify the DM is closed in Slack
Questions about this workflow
How does Notis know which DM to close?
Your prompt specifies: 'use the ticket ID or user email from the webhook to find the right DM'.
Is the message history preserved?
Yes. Closing a DM doesn't delete it—it's just removed from your sidebar and stays searchable.
Can I route different webhooks to different actions?
Absolutely. Your prompt can set logic: 'if resolved, close the DM; if escalated, create a channel instead'.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Discord to Slack. A trigger fires from one place; an action lands in another.
Discord triggers
Slack actions
New Discord Message Trigger
Polls a specific Discord channel for new messages.
Set snooze duration
Deprecated: turns on do not disturb mode for the current user, or changes its duration. use `set dnd duration` instead.
New Member Joined
Triggered when a new member joins a Discord server (guild) you manage.
Add a custom emoji to a Slack team
Deprecated: adds a custom emoji to a slack workspace given a unique name and an image url. use `add emoji` instead.
Message Reaction Added
Triggered when a reaction (emoji) is added to a message in a monitored Discord channel.
Add an emoji alias
Adds an alias for an existing custom emoji in a slack enterprise grid organization.
New Thread Created
Triggered when a new thread is created in a Discord channel within a monitored server.
Add a remote file
Adds a reference to an external file (e.g., google drive, dropbox) to slack for discovery and sharing, requiring a unique `external id` and an `external url` accessible by slack.
Message Edited
Triggered when an existing message in a monitored Discord channel is edited.
Add a star to an item
Stars a channel, file, file comment, or a specific message in slack.
Add call participants
Registers new participants added to a slack call.
Add emoji
Adds a custom emoji to a slack workspace given a unique name and an image url; subject to workspace emoji limits.
Add reaction to message
Adds a specified emoji reaction to an existing message in a slack channel, identified by its timestamp; does not remove or retrieve reactions.
Connect any two apps with Notis in the middle.
Not just Discord and Slack. Any combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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