Keep Google Calendar invites in sync with your Notion guest list
You update the guest list on a Notion event page, but the calendar invite still includes someone who is no longer coming. Notis catches the change and removes that attendee from the matching Google Calendar event, so the invite reflects who is actually in the room.
Trigger
Page Properties Updated
Triggers when properties of a Notion page are updated. Customer optionally scopes with at most one of: - data_source_id: any row in this data source - page_id: this specific page - parent_page_id: any page whose immediate parent is this page With none set, fires for any property change in the workspace the integration has access to. Adding a column to a data source fires this trigger once per existing row. Customers can branch on `data.updated_properties` (array of property IDs) to filter downstream.
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
Guest lists change in Notion while the calendar invite keeps the old attendees, leading to confusing invites and awkward extra guests.
- Invites match your real guest list, not an old one
- No one lingers on an event they were removed from
- Attendee changes stay in one place, your Notion page
- Cleaner meetings without manual invite edits
Setup
Build it in a few focused steps.
- 1Connect Notion and Google Calendar to Notis from the portal.
- 2Open Automations, click New Automation, or ask Notis in chat.
- 3Describe it: when a guest is removed from a Notion event page, remove that attendee from the matching Google Calendar event.
- 4Pick the Page Properties Updated trigger and choose the channel for reports.
- 5Test by removing a guest in Notion and confirming they drop off the event.
Questions about this workflow
Does the removed person get notified?
Google Calendar handles attendee notifications by its own settings. You can note your preference in the prompt.
Can it also add guests when I add them in Notion?
Yes, though that is a separate outcome. Set up a companion automation to add attendees when the guest list grows.
How does Notis find the right event?
It matches the Notion event page to the calendar event it is linked to, based on your plain-language instruction.
When this happens · Trigger
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Supported Triggers and Actions
Notis builds workflows that link Notion to Google Calendar. A trigger fires from one place; an action lands in another.
Notion triggers
Google Calendar actions
All Page Events
Triggers when any Notion page is created or updated across the workspace.
Insert Calendar into List
Inserts an existing calendar into the user's calendar list.
Comment Created
Triggers when a new comment is created in Notion. Optional `page_id` filter scopes to comments on a specific page. When omitted, fires for any new comment in the workspace the integration has access to. Requires the 'Read comments' capability on the Notion integration. If a connection was authorized before that capability was enabled, the user must re-authorize the connection for comment events to flow.
Update Calendar List Entry
Updates an existing entry on the user\'s calendar list.
New Comment
Triggers when a new comment is added to a specified Notion block or page.
Delete Calendar
Deletes a secondary calendar. use calendars.clear for clearing all events on primary calendars.
Database Created
Triggers when a new Notion database (the container) is created. A database is the post-2025-09-03 container that holds one or more data sources. This trigger fires for the container's creation event (`database.created`), distinct from `NOTION_DATASOURCE_CREATED` which fires when a new data source is added to an existing database. Most customers calling Notion's `POST /v1/databases` (the legacy API) or creating a database via the Notion UI will see this event. Adding a new data source to an existing database fires `data_source.created` instead — use `NOTION_DATASOURCE_CREATED` for that. Notion's payload puts `entity.type: "block"` (the container is a `child_database` block in the content tree) and `entity.id` is the database id.
Update Calendar
Updates metadata for a calendar.
Data Source Created
Triggers when a new Notion data source is created. Fires workspace-wide. The payload's `data.parent` carries the data source's tree parent (typically the teamspace) for downstream filtering. A single template-based database creation can fire multiple `data_source.created` events at once — one per data source the template instantiates.
Clear Calendar
Clears a primary calendar. this operation deletes all events associated with the primary calendar of an account.
Data Source Schema Updated
Triggers when a Notion data source's schema is updated. Fires on column add / remove / rename. Payload includes `data.updated_properties: [{id, name, action}]` so consumers can discriminate the kind of change downstream. Optional `data_source_id` filter scopes to schema changes on a single data source. When omitted, fires for any schema change in the workspace the integration has access to. Note: adding a column also fires `page.properties_updated` once per existing row in the data source. Customers wanting a single structural-change signal should use this trigger.
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.
New Page
Triggers when a new page is added to a Notion database.
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.
Page Added to Page
Fires when a new subpage (a `child_page` type block) is added under a specified parent Notion page.
Create a calendar
Creates a new, empty google calendar with the specified title (summary).
Connect any two apps with Notis in the middle.
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