Auto-label emails when calendar conflicts occur
Notis watches your calendar for conflicts and instantly labels all related emails so you can see what needs to be rescheduled.
Trigger
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).
Action
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).
Why this helps
You accidentally double-book yourself. Emails from both meetings sit in your inbox, and by the time you notice, people are expecting you at two places.
- Spot conflicts immediately instead of discovering them when someone's texting asking where you are
- Find all related correspondence automatically by having conflicting emails labeled
- Make rescheduling decisions faster by seeing context for both conflicting events
Setup
Build it in a few focused steps.
- 1Connect Google Calendar and Gmail to Notis
- 2Tell Notis 'Label all emails related to calendar conflicts I detect'
- 3Select the trigger: Calendar Event Changes
- 4Customize the label name (e.g., 'CONFLICT', 'Needs Rescheduling')
- 5Test by creating overlapping calendar events and watching Notis label related emails
Questions about this workflow
How does Notis know a conflict exists?
Notis reads your calendar and identifies overlapping events (same time, two different meetings). It then labels emails mentioning either event.
What if the overlap is intentional (e.g., a buffer meeting)?
Tell Notis 'Don't flag overlaps if one of them is labeled [buffer/buffer time]' and it will skip false positives.
Can I get an email alert too, or just the label?
You can do both. Ask Notis to 'Label AND email me when conflicts are detected' and you'll get instant notification plus organized email.
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 1,000+ integrations.
When this happens · Trigger
Do this · Action
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