Auto-Remove Attendees When Plans Change
Your CRM marks a call cancelled or a participant drops out. Notis receives the webhook and automatically removes them from the calendar event. Attendees stop getting reminders about meetings that won't happen.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Remove attendee from event
Removes an attendee from a specified event in a google calendar; the calendar and event must exist.
Why this helps
Someone cancels and has to separately email organizers or manually remove themselves from calendar events. Ghost attendees remain on events that are cancelled or significantly changed.
- Cancelled attendees stop showing up on calendar events
- Reduce confusion about who's actually attending
- Automate attendee management from external tools
- Keep calendar accurate across systems
Setup
Build it in a few focused steps.
- 1Connect Google Calendar to Notis
- 2Create automation: 'When I send a webhook with an attendee email and event ID, remove that person from the calendar event'
- 3Get your webhook URL from the automation settings
- 4Configure your external tool to send webhook requests when attendees drop out
Questions about this workflow
What information does the webhook need to send?
Event ID, calendar ID, and the attendee email address to remove.
Will this send a cancellation notice to the removed attendee?
Notis can optionally send a notification, or just silently remove them based on your preference.
Can I remove multiple attendees with one webhook?
Yes, format the webhook data to include a list of attendees and Notis removes them all.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Gmail to Google Calendar. A trigger fires from one place; an action lands in another.
Gmail triggers
Google Calendar actions
Email Sent
Triggers when a Gmail message is sent by the authenticated user. It polls the 'SENT' label and emits metadata including sender, recipients, subject, timestamp, and thread ID.
Insert Calendar into List
Inserts an existing calendar into the user's calendar list.
New Gmail Message Received Trigger
Triggers when a new message is received in Gmail.
Update Calendar List Entry
Updates an existing entry on the user\'s calendar list.
Delete Calendar
Deletes a secondary calendar. use calendars.clear for clearing all events on primary calendars.
Update Calendar
Updates metadata for a calendar.
Clear Calendar
Clears a primary calendar. this operation deletes all events associated with the primary calendar of an account.
Create Event
Creates an event on a google calendar, needing rfc3339 utc start/end times (end after start) and write access to the calendar. by default, adds the organizer as an attendee unless exclude organizer is set to true.
Delete event
Deletes a specified event by `event id` from a google calendar (`calendar id`); this action is idempotent and raises a 404 error if the event is not found.
Create a calendar
Creates a new, empty google calendar with the specified title (summary).
Connect any two apps with Notis in the middle.
Not just Gmail and Google Calendar. Any combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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