Event Reminders Sent Automatically to WhatsApp
For founders juggling 20 meetings a week: get a quick WhatsApp ping before each event so you can shift context without scrambling.
Trigger
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.
Action
Send message
Send a text message to a whatsapp number. note: the message will reflect on the recipient's phone number only if they have texted first.
Why this helps
Missing meetings or jumping in late because a calendar event didn't register in your working memory until the host was already talking.
- Mental load lifted: Notis reminds you automatically instead of you checking the time
- No more scrambles: get 5 minutes notice to wrap up and switch context
- Works across channels: reminders come straight to your phone on WhatsApp
Setup
Build it in a few focused steps.
- 1Connect your Google Calendar and WhatsApp business accounts to Notis (done once in the portal).
- 2Create a new automation and tell Notis: 'Send me a WhatsApp reminder 5 minutes before my calendar events start.'
- 3Choose which channel Notis should report successful runs to (your WhatsApp, Telegram, or email).
- 4Pick 'Event Starting Soon' as your trigger.
- 5Test by creating a calendar event 5 minutes from now and confirm the WhatsApp message arrives.
Questions about this workflow
Can I customize how many minutes of notice I get?
Yes. Tell Notis the exact lead time you prefer (e.g., '10 minutes before', 'immediately when it starts'). Notis will honor it.
Will I get a reminder for every single event on my calendar?
You can refine the automation to skip certain events. For example, 'Remind me 5 minutes before any event labeled 'Meeting' or 'Call', but skip buffer time and lunch blocks.'
What if an event gets rescheduled?
Notis only triggers on the original time. If you reschedule an event after setting up the automation, the reminder will fire at the original time. Edit the automation's prompt to exclude cancelled events if that's not what you want.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Google Calendar to Whatsapp. A trigger fires from one place; an action lands in another.
Google Calendar triggers
Whatsapp actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Create message template
Create a new message template for the whatsapp business account. templates must be approved by whatsapp before they can be used. templates are required for marketing messages and messages sent outside the 24-hour window.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Delete message template
Delete a message template from the whatsapp business account. this permanently removes the template and it cannot be recovered. only delete templates that are no longer needed.
Attendee Response Changed
Polling trigger that fires when any attendee's RSVP changes to accepted, declined, or tentative. Returns attendee info and current status.
Get business profile
Get the business profile information for a whatsapp business phone number. this includes business details like description, address, website, and contact info.
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.
Get media
Get information about uploaded media including a temporary download url. the download url is valid for 5 minutes and can be used to retrieve the actual media file. this is useful for downloading media that was sent to your whatsapp number.
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.
Get media info
Get metadata about uploaded media without generating a download url. this is useful for checking file size, type, and hash without downloading the file. use get media if you need the actual download url.
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).
Get message templates
Get all message templates for the whatsapp business account. templates are required for sending messages outside the 24-hour window and for marketing/utility messages.
Event Created
Polling trigger that fires when a new calendar event is created. Returns event ID, summary, start/end times, and organizer info.
Get phone number
Get details of a specific phone number associated with a whatsapp business account.
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).
Get phone numbers
Get all phone numbers associated with a whatsapp business account (waba).
Connect any two apps with Notis in the middle.
Google Calendar and Whatsapp, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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