React Once, Label Everywhere
Use Slack reactions (stars, flags, emoji) as quick signals. Notis instantly applies the same label to related threads in Gmail, keeping your inbox organized without extra steps.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Action
Modify email labels
Adds and/or removes specified gmail labels for a message; ensure `message id` and all `label ids` are valid (use 'listlabels' for custom label ids).
Why this helps
You organize messages in Slack with reactions, but Gmail inbox stays chaotic. Recreating the same tagging system in email means twice the work.
- One organizational system that spans both apps
- Reduce cognitive load of deciding how to tag messages twice
- Use Slack reactions as a quick visual system
- Always know which emails need action, review, or follow-up
Setup
Build it in a few focused steps.
- 1Ensure Slack and Gmail are connected to Notis.
- 2Create an automation: 'When I add a reaction to a Slack message, apply the same label in Gmail.'
- 3Notis will use Message Reaction Added as your trigger and Modify email labels as your action.
- 4Decide which Slack reaction emoji maps to which Gmail label (e.g., star = urgent, heart = follow-up).
- 5Test by reacting to a Slack message; Notis will label the corresponding email thread in seconds.
Questions about this workflow
Do I need to manually map emoji to labels?
Notis can learn your reaction patterns. The first time you react, tell Notis which Gmail label to use. After that, Notis applies it automatically.
What if the email doesn't exist yet?
Notis can create a new label and draft in Gmail if the conversation hasn't been emailed yet. Just confirm in the setup.
Can I remove labels when I remove a reaction?
Absolutely. Set up a second automation that triggers on 'Message Reaction Removed' and removes the label in Gmail.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Gmail. A trigger fires from one place; an action lands in another.
Slack triggers
Gmail actions
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Modify email labels
Adds and/or removes specified gmail labels for a message; ensure `message id` and all `label ids` are valid (use 'listlabels' for custom label ids).
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Create email draft
Creates a gmail email draft, supporting to/cc/bcc, subject, plain/html body (ensure `is html=true` for html), attachments, and threading.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Create label
Creates a new label with a unique name in the specified user's gmail account.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Delete Draft
Permanently deletes a specific gmail draft using its id; ensure the draft exists and the user has necessary permissions for the given `user id`.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Delete message
Permanently deletes a specific email message by its id from a gmail mailbox; for `user id`, use 'me' for the authenticated user or an email address to which the authenticated user has delegated access.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Fetch emails
Fetches a list of email messages from a gmail account, supporting filtering, pagination, and optional full content retrieval.
Reaction Removed Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_REMOVED` instead. Triggered when a reaction is removed from a message.
Fetch message by message ID
Fetches a specific email message by its id, provided the `message id` exists and is accessible to the authenticated `user id`.
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.
Fetch Message by Thread ID
Retrieves messages from a gmail thread using its `thread id`, where the thread must be accessible by the specified `user id`.
Connect any two apps with Notis in the middle.
Not just Slack and Gmail. Any combination from 985+ integrations.
When this happens · Trigger
Do this · Action
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