Connect 
Slack and 
Google Calendar to power automations.
Trigger from one app, act on another, with a thinking brain in the middle. Build it in plain English. Approve from your phone.
When this happens · Trigger
Do this · Action
Most used workflows for Slack + Google Calendar
Auto-add Slack mentions to your calendar
When you're mentioned in a Slack channel, automatically create a calendar event so you won't forget the context.
Quick-add calendar events from Slack DMs
When someone sends you a meeting request via DM, Notis uses natural language to create the calendar event instantly.
React to block focus time on your calendar
Add a specific emoji reaction in Slack to instantly create a focus block on your calendar.
Search your calendar for deadline conflicts when mentioned in Slack
When a deadline is mentioned in a Slack channel, automatically check your calendar to flag any conflicts.
Auto-add today's priorities to your calendar each morning
Every morning, Notis creates a calendar block for your top daily priorities from Slack.
Check availability when someone requests your time via DM
When a DM comes in asking about your availability, Notis instantly finds your free slots and shares them.
Emoji-react to auto-update meeting notes on your calendar
React with a specific emoji to a meeting recap in Slack, and Notis updates the corresponding calendar event with the notes.
Auto-create calendar events when external tools send webhooks
When your other apps (project management, email, etc.) trigger a webhook, Notis creates the corresponding calendar event.
Auto-delete cancelled meetings from your calendar
When a cancelled meeting is announced in Slack, Notis removes it from your calendar.
Supported Triggers and Actions
Notis builds workflows that link Slack to Google Calendar. A trigger fires from one place; an action lands in another.
Slack triggers
Google Calendar actions
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Insert Calendar into List
Inserts an existing calendar into the user's calendar list.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Update Calendar List Entry
Updates an existing entry on the user\'s calendar list.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Delete Calendar
Deletes a secondary calendar. use calendars.clear for clearing all events on primary calendars.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Update Calendar
Updates metadata for a calendar.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Clear Calendar
Clears a primary calendar. this operation deletes all events associated with the primary calendar of an account.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Create Event
Creates an event on a google calendar, needing rfc3339 utc start/end times (end after start) and write access to the calendar. by default, adds the organizer as an attendee unless exclude organizer is set to true.
Reaction Removed Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_REMOVED` instead. Triggered when a reaction is removed from a message.
Delete event
Deletes a specified event by `event id` from a google calendar (`calendar id`); this action is idempotent and raises a 404 error if the event is not found.
New Bot Message Received Trigger
DEPRECATED: use `SLACK_CHANNEL_MESSAGE_RECEIVED` with `is_bot_message=true` instead. Triggered when a new bot message is posted to a Slack channel.
Create a calendar
Creates a new, empty google calendar with the specified title (summary).
Four ways to start an automation.
A trigger is the event that kicks a workflow off. Notis supports four kinds: an event in a connected app, an inbound webhook, a recurring schedule, and soon, your own database.
Integration triggers
Fire when something happens inside a connected app. New Notion page, Stripe charge, Linear issue: any of 1,000+ apps can start a workflow.
Webhook triggers
A unique URL per workflow. Anything that can send an HTTP POST can start an automation, including no-code tools that speak webhooks.
Recurring triggers
Cron-style schedules run a workflow on the clock. Daily standups, hourly syncs, business-hours-only digests: the workhorse of Notis.
Database triggers
Watch a row, query, or threshold in your own database and fire the moment the data changes. Row inserted, value crosses a limit, query starts matching.
Classic automation breaks. AI adapts.
Same triggers and actions, smarter middle. AI handles the fuzziness that breaks traditional Zapier-style workflows the moment a field gets renamed.
Describe it. Notis builds it.
Skip the visual builder. Tell Notis what you want, in plain English. It writes the workflow, you review and deploy.
You · in the Notis Builder
NEW“When a row gets added to the Q4 OKRs Notion database and the status is Blocked, send a Telegram message to the owner with a summary of what's blocking, and ping me if there's no reply within 24 hours.”
Notis built this automation:
Watch every run.
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- Full run history with inputs, outputs and traces
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1 monthEverything in the box.
Whatever starts the workflow, the platform underneath is the same: a thinking brain, full visibility, and you in control.
AI in the middle
Every step can include an LLM call: summarise, classify, extract, rewrite.
Full observability
Every run, every step, every input, all replay-able from Mission Control.
Human in the loop
Pause for approval. Notis pings you in chat with one-tap approve.
Self-healing
When an API changes shape, Notis adapts the parser. Less midnight fire-fighting.
More ways to connect Slack and Google Calendar
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