Acknowledge Trello activity with a quick Slack signal
Let Notis mark a related Slack update with a reaction when a meaningful Trello activity event occurs.
Trigger
New Activity Trigger
Triggered when there is activity in Trello.
Action
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.
Why this helps
Small progress updates can call for acknowledgment, but composing another message adds friction and noise.
- Acknowledge progress without adding another full message.
- Give a related Slack update a visible signal.
- Make lightweight recognition easier to maintain.
Setup
Build it in a few focused steps.
- 1Connect Trello and Slack to Notis once through the portal.
- 2Create an automation in the portal or ask Notis conversationally.
- 3Describe the activity and related Slack message that should receive a reaction.
- 4Select the Trello new-activity trigger and a channel for run reports.
- 5Test with one real activity and verify the intended message is acknowledged.
Questions about this workflow
Can a reaction be added to any message?
The instruction should identify a related message Notis can locate; the action adds a reaction to an existing Slack message.
Can this react to every Trello event?
Describe which activity is meaningful so the workflow stays focused.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Trello to Slack. A trigger fires from one place; an action lands in another.
Trello triggers
Slack actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Set snooze duration
Deprecated: turns on do not disturb mode for the current user, or changes its duration. use `set dnd duration` instead.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
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.
Card Archived Trigger
Triggered when a card is archived in the specified board
Add an emoji alias
Adds an alias for an existing custom emoji in a slack enterprise grid organization.
New Activity Trigger
Triggered when there is activity in Trello.
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.
New Board Trigger
Triggered when a board is created in the specified workspace
Add a star to an item
Stars a channel, file, file comment, or a specific message in slack.
New Card Trigger
Triggered when a card is created in the specified board
Add call participants
Registers new participants added to a slack call.
Card Updated Trigger
Triggered when a specific card is updated
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.
Trello and Slack, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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