Never Wonder If Tentative Attendees Are Actually Coming
Tentative RSVPs create uncertainty. Notis alerts you in Slack when someone marks tentative, so you can quickly reach out and get a firm yes or no before prep time is wasted.
Trigger
Attendee Response Changed
Polling trigger that fires when any attendee's RSVP changes to accepted, declined, or tentative. Returns attendee info and current status.
Action
Create a reminder
Creates a slack reminder with specified text and time; time accepts unix timestamps, seconds from now, or natural language (e.g., 'in 15 minutes', 'every thursday at 2pm').
Why this helps
Neurodivergent founders need clarity and certainty. Tentative RSVPs introduce ambiguity that increases cognitive load. Without a reminder to follow up, these float in limbo, making it hard to confirm if key people are actually attending.
- Clarify attendance status before wasting prep time
- Give tentative attendees a friendly nudge to decide
- Plan meeting outcomes with confirmed attendee count
- Reduce ambiguity-related anxiety
Setup
Build it in a few focused steps.
- 1Connect Google Calendar and Slack.
- 2Create an automation called 'Tentative RSVP Follow-Up'.
- 3Write this prompt: 'When someone marks tentative on my calendar invite, send me a Slack reminder with their name and the meeting details. Include a note to follow up with them for confirmation.'
- 4Set the trigger to 'Attendee Response Changed.'
- 5Choose a Slack channel for these reminders.
- 6Test by asking a colleague to tentatively accept an upcoming meeting.
Questions about this workflow
Can I automatically message the tentative attendee?
The automation sends you a reminder. You can then personally reach out to them via their preferred channel.
What if I prefer not to worry about tentative RSVPs?
You can specify: 'Only alert me on tentative RSVPs for meetings with 5+ people' or 'Skip these reminders for casual team meetings.'
How much time before the meeting do I get the alert?
Immediately when they click tentative, giving you maximum time to follow up.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Google Calendar to Slack. A trigger fires from one place; an action lands in another.
Google Calendar triggers
Slack 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.
Set snooze duration
Deprecated: turns on do not disturb mode for the current user, or changes its duration. use `set dnd duration` instead.
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.
Add a custom emoji to a Slack team
Deprecated: adds a custom emoji to a slack workspace given a unique name and an image url. use `add emoji` instead.
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.
Add an emoji alias
Adds an alias for an existing custom emoji in a slack enterprise grid organization.
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).
Add a remote file
Adds a reference to an external file (e.g., google drive, dropbox) to slack for discovery and sharing, requiring a unique `external id` and an `external url` accessible by slack.
Event Created
Polling trigger that fires when a new calendar event is created. Returns event ID, summary, start/end times, and organizer info.
Add a star to an item
Stars a channel, file, file comment, or a specific message in slack.
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).
Add call participants
Registers new participants added to a slack call.
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.
Add emoji
Adds a custom emoji to a slack workspace given a unique name and an image url; subject to workspace emoji limits.
Add reaction to message
Adds a specified emoji reaction to an existing message in a slack channel, identified by its timestamp; does not remove or retrieve reactions.
Connect any two apps with Notis in the middle.
Not just Google Calendar and Slack. Any combination from 985+ integrations.
When this happens · Trigger
Do this · Action
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