Keep attendee lists aligned with opt-outs
An explicit opt-out updates the invitation without changing the event for everyone else.
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
A withdrawn attendee can keep receiving reminders because the calendar invitation was never updated.
- Respect a clear opt-out quickly.
- Change only the named attendee.
- Keep the event and remaining invitees intact.
Setup
Build it in a few focused steps.
- 1Connect both integrations once.
- 2Create a webhook automation to remove an attendee only from an explicitly authorized opt-out payload.
- 3Supply calendar ID, event ID, and the exact attendee address.
- 4Send one authorized test opt-out and verify the attendee list.
Questions about this workflow
Can it remove attendees by name alone?
No. Supply the exact attendee address required by the calendar action.
Does it delete the event?
No. It removes only the named attendee.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Eventbrite to Google Calendar. A trigger fires from one place; an action lands in another.
Eventbrite triggers
Google Calendar actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Insert Calendar into List
Inserts an existing calendar into the user's calendar list.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
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.
Eventbrite and Google Calendar, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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No card. Works with personal or business Google Calendar.