Sync File Sharing to Slack Automatically
New collaborators are added to files but left out of Slack conversations. Notis automatically invites them to your Slack channel when they are granted file access, keeping collaboration unified.
Trigger
File Shared (Permissions Added)
Triggers when new sharing permissions are granted to a file or folder. Uses Drive's `changes.list` endpoint with inline `permissions` in the `fields` mask so each change carries the file's current permission set provider-atomically. We diff that against `seen_permission_keys` to identify newly added grants. Drive page tokens are the primary cursor; if Drive rejects a stored token, the trigger raises `PollingTriggerError` without clearing state rather than silently re-baselining and dropping events. Limitation: truly ephemeral permissions (added and revoked between two polls without any other file modification in between) are not detected. Drive Activity API would catch those but requires an additional OAuth scope and a different payload contract.
Action
Invite users to a Slack channel
Invites users to an existing slack channel using their valid slack user ids.
Why this helps
Neurodivergent founders share files with new team members but forget to invite them to Slack, leading to siloed conversations, missed context, and collaboration friction.
- Keep Slack invitations in sync with file sharing
- Onboard new collaborators to conversations automatically
- Reduce coordination overhead between tools
- Improve collaboration by keeping discussions unified
Setup
Build it in a few focused steps.
- 1Connect Google Drive and Slack to Notis (one-time setup).
- 2Ask Notis 'When I share files in Google Drive, invite the person to my Slack channel' or use the portal.
- 3Specify which Slack channel to use for invitations and name your automation.
- 4Test by sharing a file with someone and watch Notis invite them to Slack.
- 5Optionally adjust which channel or people are included (e.g., 'Only invite to #project-collab, not #random').
Questions about this workflow
Can I invite different people to different channels based on the file?
Yes. Describe the rule in your prompt, like 'If sharing a client file, invite to #clients; if internal, invite to #projects.'
What if the person is already in the channel?
Notis will check and only invite if they are not already a member, avoiding duplicate invites.
Will this work for multiple files shared at once?
Yes. Notis will process each file share and invite the person accordingly.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Google Drive to Slack. A trigger fires from one place; an action lands in another.
Google Drive triggers
Slack actions
Comment Added (Docs/Sheets/Slides)
Triggers when a new comment is added to Google Docs, Sheets, or Slides.
Set snooze duration
Deprecated: turns on do not disturb mode for the current user, or changes its duration. use `set dnd duration` instead.
File Created
Triggers when a new file is created in Google Drive.
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.
File Deleted or Trashed
Triggers when a file is moved to trash or permanently deleted in Drive.
Add an emoji alias
Adds an alias for an existing custom emoji in a slack enterprise grid organization.
File Shared (Permissions Added)
Triggers when new sharing permissions are granted to a file or folder. Uses Drive's `changes.list` endpoint with inline `permissions` in the `fields` mask so each change carries the file's current permission set provider-atomically. We diff that against `seen_permission_keys` to identify newly added grants. Drive page tokens are the primary cursor; if Drive rejects a stored token, the trigger raises `PollingTriggerError` without clearing state rather than silently re-baselining and dropping events. Limitation: truly ephemeral permissions (added and revoked between two polls without any other file modification in between) are not detected. Drive Activity API would catch those but requires an additional OAuth scope and a different payload contract.
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.
File Updated
Triggers when a file's metadata or content changes in Google Drive.
Add a star to an item
Stars a channel, file, file comment, or a specific message in slack.
Google Drive Changes
Triggers when changes are detected in a Google Drive.
Add call participants
Registers new participants added to a slack call.
New File Matching Query
Triggers when a new Google Drive file matches a provided query. This is the legacy query-centric trigger: it preserves Drive API query config such as ``corpora`` / ``driveId`` aliases and emits the historical ``file_matching_query`` event type. ``FileCreatedTrigger`` covers the broader "new file" case and emits ``file_created``.
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 Drive and Slack. Any combination from 985+ integrations.
When this happens · Trigger
Do this · Action
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