Get booking context from a flagged Slack message
When a scheduling message gets your chosen follow-up reaction, have Notis look up matching Cal bookings so the next step is clear.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Action
Fetch all bookings
Fetches a list of bookings, optionally filtered by status, attendee, date range, or by event/team ids (which must belong to/include the authenticated user respectively), with support for pagination and sorting.
Why this helps
Messages flagged for later can lose their context by the time you return to them.
- Pairs a lightweight flag with useful booking context.
- Reduces the memory burden of revisiting a message later.
- Makes scheduling follow-up easier to resume.
Setup
Build it in a few focused steps.
- 1Connect Slack and Cal to Notis once through the portal.
- 2Create an automation in the portal, or ask Notis to look up Cal bookings related to a Slack message when your chosen follow-up reaction is added.
- 3Select Message Reaction Added as the trigger and choose where run reports should appear.
- 4Test with one real reaction on a scheduling message containing attendee or date context.
Questions about this workflow
Will it look up a booking for every reaction?
The instruction should specify the reaction and require a scheduling-related message.
Can this create a follow-up booking?
No. This action only fetches existing bookings.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Cal. A trigger fires from one place; an action lands in another.
Slack triggers
Cal actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Add member to team
Adds a new member to a specified team within an organization by creating a team membership.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Add organization attribute option
Adds a new option to an organization's attribute, requiring a display `value` and a `slug` unique for that attribute.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Delete oauth client webhook
Permanently deletes a specific webhook subscription of an oauth client in the cal application, stopping its notifications.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Cancel booking via uid
Cancels an existing and active cal.com booking using its unique identifier (uid).
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Check calendar availability
Retrieves free/busy availability for a specified calendar to aid scheduling without revealing event details; requires an existing, accessible calendar, noting that data granularity can vary.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Check gcal synchronization status
Call this read-only action to verify the connection and synchronization status of a user's google calendar integration with cal.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Check ics feed calendar endpoint
Checks an ics feed url (expected as a query parameter) to verify its validity, accessibility, and icalendar data integrity.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Check Stripe status
Verifies if stripe is correctly connected to the cal scheduling system and functional for processing payments, reporting only on the integration's status.
Connect any two apps with Notis in the middle.
Slack and Cal, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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