Extend Your Calendar Automations with Custom Webhooks
Your ticketing system, CRM, or custom backend needs to notify you about a calendar event. Set up a webhook trigger in Notis so that when your external tool makes an HTTP request, a Telegram message fires instantly.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Send Message
Send a text message to a telegram chat using the bot api.
Why this helps
You manage calendars across multiple systems (your app, a client portal, a scheduling tool). Alerts get siloed in different apps, so you miss context or have to check everything manually.
- Bridge gaps between your calendar and other business systems
- Consolidate alerts from multiple sources into one Telegram stream
- Automate notifications for calendar-related events in third-party apps
- Reduce manual handoffs between systems
Setup
Build it in a few focused steps.
- 1Connect Google Calendar and Telegram to Notis.
- 2Create an automation: "When an external system sends a webhook to Notis with calendar event data, post a Telegram message."
- 3Select the trigger: "Notis Webhook" and configure the endpoint URL.
- 4Define what information the webhook will send (event name, time, attendees, etc.).
- 5Test by sending a sample webhook request from your external system.
Questions about this workflow
What data can I send via webhook?
You can send any JSON payload: event name, time, attendees, links, or custom fields. Notis formats it and sends it to Telegram.
How do I connect my external system to the webhook?
Notis gives you a unique webhook URL during automation setup. Configure your external tool to POST to that URL when the event occurs.
Can I send different message types for different event types?
Yes. You can set up multiple automations with different webhook conditions and actions.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Google Calendar to Telegram. A trigger fires from one place; an action lands in another.
Google Calendar triggers
Telegram 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.
Answer Callback Query
Use this method to send answers to callback queries sent from inline keyboards. the answer will be displayed to the user as a notification at the top of the chat screen or as an alert.
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.
Delete Message
Delete a message, including service messages, with certain limitations.
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.
Edit Message
Edit text messages sent by the bot.
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).
Export Chat Invite Link
Generate a new primary invite link for a chat; any previously generated primary link is revoked. the bot must be an administrator in the chat for this to work and must have the appropriate administrator rights.
Event Created
Polling trigger that fires when a new calendar event is created. Returns event ID, summary, start/end times, and organizer info.
Forward Message
Forward messages of any kind. service messages can't be forwarded.
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 Chat Info
Get up to date information about the chat (current name of the user for one-on-one conversations, current username of a user, group or channel, etc.).
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.
Get Chat Administrators
Get a list of administrators in a chat. on success, returns an array of chatmember objects that contains information about all chat administrators except other bots.
Get Chat History
Get chat history messages. note: this uses the getupdates method with specific parameters to retrieve historical messages.
Connect any two apps with Notis in the middle.
Not just Google Calendar and Telegram. Any combination from 985+ integrations.
When this happens · Trigger
Do this · Action
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