Reactions Drive Your Label System
You use reactions in Slack to flag, approve, or mark items. When you remove a reaction, that signal should disappear from Gmail too. Notis keeps your labels in sync.
Trigger
Message Reaction Removed
Triggered when a reaction is removed from 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 react to Slack messages to organize them, but removing reactions doesn't clean up Gmail labels. Your email stays cluttered with stale tags.
- Keep Gmail labels up-to-date with your real-time priorities
- Use reactions as a living organizational system
- Reduce clutter from outdated tags
- Lower cognitive load by having one source of truth
Setup
Build it in a few focused steps.
- 1Connect Slack and Gmail.
- 2Create an automation: 'When I remove a reaction from a Slack message, remove the matching label from Gmail.'
- 3Notis will use Message Reaction Removed as your trigger.
- 4Map which reactions remove which labels (reverse of your 'reaction added' automation).
- 5Test by removing a reaction from a Slack message and check Gmail.
Questions about this workflow
Should I set up both 'add' and 'remove' automations?
It's ideal to have both so your Gmail labels stay in sync with your current Slack reactions. But start with 'add' if you prefer.
What if I want to ignore certain reactions?
Tell Notis which reactions matter. You can exclude common ones like laughing faces if they clutter your labels.
Can I combine this with other label rules?
Absolutely. You can have reactions, channels, and other signals all adding/removing labels in Gmail. They work together without conflict.
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.
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When this happens · Trigger
Do this · Action
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