Get meeting prep time without scrambling
Someone posts in Slack: 'Investor call tomorrow at 2pm.' Notis checks your calendar for free time before 2pm and suggests a 30-minute prep window. You're ready instead of winging it.
Trigger
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Action
Find free slots
Finds free/busy time slots in google calendars for specified calendars within a defined time range (defaults to the current day utc if `time min`/`time max` are omitted), enhancing busy intervals with event details; `time min` must precede `time max` if both are provided.
Why this helps
Meetings are announced and you show up unprepared because you didn't know about them or didn't have time to prep. You stumble through and wish you'd had 15 minutes to gather your thoughts.
- Never show up unprepared because Notis finds prep time and blocks it automatically
- Reduce anxiety about meetings by having structured prep time
- Show up sharper and more confident with even 15-30 minutes of focused prep
Setup
Build it in a few focused steps.
- 1Connect Slack and Google Calendar to Notis
- 2Tell Notis: 'When a meeting is mentioned in Slack, find 30 minutes of free time before it on my calendar'
- 3Notis will look backward from the meeting time for available prep windows
- 4Test by posting a meeting announcement in a channel and watch Notis suggest prep time
Questions about this workflow
What if there's no time available before the meeting?
Notis will find time the day before or suggest the earliest available 30-minute window, and you can decide if you need it.
How does Notis know which meeting is being discussed?
It looks for time references like 'tomorrow at 2pm' or meeting names. If it's unsure, it can ask the channel for clarification.
Can I customize prep duration?
Absolutely. 15 minutes for standup, 1 hour for investor calls—tell Notis what you need per meeting type.
When this happens · Trigger
Do this · Action
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
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Insert Calendar into List
Inserts an existing calendar into the user's calendar list.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Update Calendar List Entry
Updates an existing entry on the user\'s calendar list.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Delete Calendar
Deletes a secondary calendar. use calendars.clear for clearing all events on primary calendars.
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
Updates metadata for a calendar.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Clear Calendar
Clears a primary calendar. this operation deletes all events associated with the primary calendar of an account.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
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.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
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.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Create a calendar
Creates a new, empty google calendar with the specified title (summary).
Connect any two apps with Notis in the middle.
Slack and Google Calendar, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
Save your first hour today.
7-day trial of any paid plan, with 20$ of usage included.
No card. Works with personal or business Google Calendar.