Prepare an attendee list with a reaction
Mark a session message and retrieve its participant list for preparation.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Action
List Event Date Participants
Tool to list participants for a specific event date. Use after scheduling an event session to retrieve attendees.
Why this helps
Preparing for a webinar often means remembering one more dashboard lookup at the right time.
- Use a reaction as a cue for attendee preparation.
- Retrieve participants for the specified session date.
Setup
Build it in a few focused steps.
- 1Connect Slack and Demio to Notis once in the portal.
- 2Create an automation in the portal, or ask Notis to create it in plain language.
- 3In one instruction, say to retrieve participants for a specified Demio event date when its Slack message receives the chosen reaction.
- 4Select the Slack Message Reaction Added trigger and choose a channel for run reports.
- 5Test by reacting to a real session message with event and date identifiers.
Questions about this workflow
What data does the action retrieve?
It lists participants for one Demio event date.
Can the reaction work without event details?
The instruction needs to identify the event date whose participants should be retrieved.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Demio. A trigger fires from one place; an action lands in another.
Slack triggers
Demio actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Demio Create Join Link
Tool to register an attendee and obtain their unique Demio join link. Use after confirming a valid event_id.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Demio: Get Event by ID
Tool to retrieve event details by ID. Use when you need the full metadata for a specific Demio event.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
List Event Date Participants
Tool to list participants for a specific event date. Use after scheduling an event session to retrieve attendees.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
List Event Dates
Tool to list all scheduled session dates for a given Demio event. Use when you need the session schedule by event ID.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
List Demio Events
Tool to retrieve a list of Demio events. Use when you need to fetch events optionally filtered by type or paginated.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Demio API Ping
Tool to perform a health check on the Demio API. Use to verify the API is reachable before other calls.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Connect any two apps with Notis in the middle.
Slack and Demio, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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