Automatic email alerts for calendar event changes
Reschedule a meeting or change an agenda detail and Notis automatically notifies all attendees via email. No separate messages needed.
Trigger
Event Updated
Triggers when an existing Google Calendar event is modified. Returns the event ID, change type, and the specific fields that changed with their previous and new values.
Action
Send Email
Sends an email via gmail api using the authenticated user's google profile display name, requiring `is html=true` if the body contains html and valid `s3key`, `mimetype`, `name` for any attachment.
Why this helps
You update a calendar event—move the time, change the agenda, add a link—but attendees only see the calendar notification. Many miss it, and you end up fielding questions about what changed.
- Ensure attendees know about changes immediately via email, not just calendar notifications they might miss
- Reduce confusion by spelling out what changed instead of leaving them to figure out the diff
- Avoid follow-up questions by proactively communicating updates
Setup
Build it in a few focused steps.
- 1Connect Google Calendar and Gmail to Notis
- 2Create an automation: 'Email attendees whenever I change a meeting on my calendar'
- 3Select the trigger: Event Updated
- 4Tell Notis what information to include in the email ('the new time', 'what changed', etc.)
- 5Test by scheduling a meeting, updating it, and confirming attendees get the email
Questions about this workflow
Will attendees get an email for every small change?
You can set thresholds: 'Only send if the time changes' or 'Only send for agenda or link updates, not description edits.' Notis filters based on your rules.
What counts as an 'update'?
Notis detects when you change time, date, agenda, meeting link, attendees, or other key fields. Minor edits like fixing a typo in the description won't trigger an email.
Can I preview what Notis will send before it goes out?
Yes. Notis can be set to create a draft for your review, or send immediately. You control whether to have a review step.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Google Calendar to Gmail. A trigger fires from one place; an action lands in another.
Google Calendar triggers
Gmail actions
Attendee Response Changed
Polling trigger that fires when any attendee's RSVP changes to accepted, declined, or tentative. Returns attendee info and current status.
Modify email labels
Adds and/or removes specified gmail labels for a message; ensure `message id` and all `label ids` are valid (use 'listlabels' for custom label ids).
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.
Create email draft
Creates a gmail email draft, supporting to/cc/bcc, subject, plain/html body (ensure `is html=true` for html), attachments, and threading.
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.
Create label
Creates a new label with a unique name in the specified user's gmail account.
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).
Delete Draft
Permanently deletes a specific gmail draft using its id; ensure the draft exists and the user has necessary permissions for the given `user id`.
Event Created
Polling trigger that fires when a new calendar event is created. Returns event ID, summary, start/end times, and organizer info.
Delete message
Permanently deletes a specific email message by its id from a gmail mailbox; for `user id`, use 'me' for the authenticated user or an email address to which the authenticated user has delegated access.
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).
Fetch emails
Fetches a list of email messages from a gmail account, supporting filtering, pagination, and optional full content retrieval.
Event Updated
Triggers when an existing Google Calendar event is modified. Returns the event ID, change type, and the specific fields that changed with their previous and new values.
Fetch message by message ID
Fetches a specific email message by its id, provided the `message id` exists and is accessible to the authenticated `user id`.
Fetch Message by Thread ID
Retrieves messages from a gmail thread using its `thread id`, where the thread must be accessible by the specified `user id`.
Connect any two apps with Notis in the middle.
Not just Google Calendar and Gmail. Any combination from 985+ integrations.
When this happens · Trigger
Do this · Action
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