Keep attendance aligned when plans change again
When the team reverses a withdrawal signal, remove the stale attendee entry only if the meaning is explicitly confirmed.
Trigger
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Action
Delete Meeting Attendee
Tool to remove an attendee from a meeting. Use after confirming attendee details.
Why this helps
A reaction change can make prior coordination unclear and leave the attendee record inconsistent.
- Keep attendee records aligned with a clearly confirmed decision.
- Reduce uncertainty after plans change.
- Avoid inferring intent from a reaction change alone.
Setup
Build it in a few focused steps.
- 1Connect Slack and ChMeetings to Notis once in the portal.
- 2Create an automation in Automations, or ask Notis conversationally.
- 3Write one plain-language instruction to remove an attendee only if removing the agreed withdrawal reaction clearly confirms that the person should no longer attend.
- 4Choose Message Reaction Removed, optionally filter for the emoji or channel, and choose a run-report channel.
- 5Test with one real reaction removal whose meaning is explicit.
Questions about this workflow
Does removing a reaction always mean someone withdrew?
No. Tell Notis to act only when the message or follow-up clearly confirms the intended attendance change.
What does the action remove?
It removes the attendee from a specified meeting, not the person from the directory.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Chmeetings. A trigger fires from one place; an action lands in another.
Slack triggers
Chmeetings actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Invite Meeting Attendee
Tool to invite a new attendee to a specified meeting. Use when you need to add attendees before the meeting begins.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Get Attendee Details
Tool to retrieve details for a specific attendee. Use when you have an attendee_id and need the attendee's full profile.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
ChMeetings: Create Meeting
Tool to create a new meeting in ChMeetings. Use when you have all meeting details and need to schedule it via the ChMeetings API.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
ChMeetings: Create Organization
Tool to create a new organization.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
ChMeetings: Create Reminder
Tool to create/schedule a reminder for a meeting in ChMeetings.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Delete Meeting Attendee
Tool to remove an attendee from a meeting. Use after confirming attendee details.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
List Meeting Attendees
Tool to list attendees of a meeting. Use when you need to retrieve attendees for a specific meeting.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
ChMeetings: Delete Meeting
Tool to delete an existing meeting. Use when you have confirmed the meeting ID to permanently remove the meeting.
Connect any two apps with Notis in the middle.
Slack and Chmeetings, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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No card. Works with personal or business Chmeetings.