Stay on Top of Deleted Calendar Events
Event deletions often go unnoticed until you look at your calendar later. Notis sends an instant Slack alert when an event is removed, so you can immediately update action items and reschedule dependent work.
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
When a meeting is deleted, it's easy to miss if you're not constantly monitoring your calendar. This leads to wasted prep time, confusion about what's happening when, or missed opportunities to reschedule other commitments.
- Immediately reclaim time from deleted meetings
- Avoid confusion about whether a meeting is truly cancelled or just rescheduled
- Update related tasks and follow-ups that depended on the meeting
- Reduce calendar anxiety by centralizing deletion notifications
Setup
Build it in a few focused steps.
- 1Connect Google Calendar and Slack to Notis.
- 2In Automations, create a new automation called 'Event Deletion Alert'.
- 3Write this prompt: 'Whenever an event is deleted from my calendar, send me a Slack alert with the event title, original time, and a note to update related tasks or follow-ups.'
- 4Set the trigger to 'Event Canceled or Deleted'.
- 5Choose a Slack channel for these alerts.
- 6Test by deleting an upcoming event and checking for the Slack notification.
Questions about this workflow
Is this different from the cancellation alert automation?
This specifically tracks deletions, which are permanent. Cancellations are when the organizer formally cancels a meeting. Both send alerts but capture different intent.
Will I get notified if someone else deletes my event from their calendar?
No. This only tracks deletions from your own calendar.
Can I differentiate between personal and work event deletions?
Tell Notis: 'Only alert me for deletions of team meetings or meetings with attendees. Skip personal time block deletions.'
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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