Never Be Caught With a Cancelled Meeting on Your Calendar
When a meeting gets cancelled, you need to know fast. Notis sends a Slack reminder instantly, so you can clear your schedule and reprioritize without checking your calendar.
Trigger
Event Canceled or Deleted
Triggers when a Google Calendar event is cancelled or deleted. Returns minimal data: event_id, summary (if available), and cancellation timestamp.
Action
Create a reminder
Creates a slack reminder with specified text and time; time accepts unix timestamps, seconds from now, or natural language (e.g., 'in 15 minutes', 'every thursday at 2pm').
Why this helps
Cancelled meetings often get lost in a sea of notifications. Many neurodivergent founders struggle to notice deletions in time, leaving blocked calendar slots that create false time anxiety or accidentally double-book follow-ups.
- Immediately reclaim blocked time without reopening your calendar
- Prevent context-switching to manually scan for cancellations
- Avoid confusion about which meeting was deleted
- Quickly reschedule related follow-ups or prep work
Setup
Build it in a few focused steps.
- 1Connect your Google Calendar and Slack to Notis in the portal.
- 2In Automations, create a new automation called 'Meeting Cancellation Alert'.
- 3Set the prompt: 'Whenever a meeting on my calendar is cancelled or deleted, send me a Slack reminder with the meeting name and when it was supposed to happen.'
- 4Select 'Event Canceled or Deleted' as your trigger.
- 5Pick a Slack channel for notifications (your personal DM or #alerts).
- 6Test by deleting an upcoming event and verify the Slack reminder arrives.
Questions about this workflow
Will I get a reminder if I cancel my own event?
Yes. This helps you remember what you cancelled and any follow-ups attached to it.
Does this work for events cancelled by other organizers?
Yes. If someone else cancels a meeting you're invited to, Notis will notify you immediately.
Can I exclude personal or low-priority events?
Tell Notis in your prompt: 'Only alert me when meetings with more than 2 people are cancelled' or 'Skip 1-on-1s.'
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Google Calendar to Slack. A trigger fires from one place; an action lands in another.
Google Calendar triggers
Slack actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Set snooze duration
Deprecated: turns on do not disturb mode for the current user, or changes its duration. use `set dnd duration` instead.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
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.
Attendee Response Changed
Polling trigger that fires when any attendee's RSVP changes to accepted, declined, or tentative. Returns attendee info and current status.
Add an emoji alias
Adds an alias for an existing custom emoji in a slack enterprise grid organization.
Event Canceled or Deleted
Triggers when a Google Calendar event is cancelled or deleted. Returns minimal data: event_id, summary (if available), and cancellation timestamp.
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.
Event Starting Soon
Triggers when a calendar event is within a configured number of minutes from starting. Returns event details, time remaining, attendees, and join links when available.
Add a star to an item
Stars a channel, file, file comment, or a specific message in slack.
Calendar Event Changes
**SOON TO BE DEPRECATED** - Use Calendar Event Sync (polling trigger) instead. Real-time webhook trigger for calendar event changes. Returns event metadata only. For full event data, use Calendar Event Sync (polling trigger).
Add call participants
Registers new participants added to a slack call.
Event Created
Polling trigger that fires when a new calendar event is created. Returns event ID, summary, start/end times, and organizer info.
Add emoji
Adds a custom emoji to a slack workspace given a unique name and an image url; subject to workspace emoji limits.
Calendar Event Sync
Polling trigger that returns full event data including details, attendees, and metadata. For real-time notifications with basic info, use Calendar Event Changes (webhook).
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.
Google Calendar and Slack, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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