Make message acknowledgment easier to scan
Give a chosen reaction a consistent follow-through so important messages are easier to recognize later.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
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
Teams may use different reactions to signal acknowledgment, making it harder to scan what has been seen.
- Creates a consistent visual acknowledgment
- Makes key messages easier to scan
- Reduces ambiguity around team signals
Setup
Build it in a few focused steps.
- 1Connect Slackbot and Slack to Notis once in the portal.
- 2Create an automation in the portal or describe the desired reaction behavior to Notis.
- 3Write one instruction explaining which reaction should trigger the acknowledgment marker and which marker to add.
- 4Select the reaction-added trigger and a channel for run reports.
- 5Test with one real message reaction and verify the marker is appropriate.
Questions about this workflow
Can I choose which reaction starts this?
The trigger supports optional filtering by channel and emoji; describe the intended reaction in your automation.
Does this remove the original reaction?
No. The Slack action adds a reaction and does not remove existing reactions.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slackbot to Slack. A trigger fires from one place; an action lands in another.
Slackbot 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.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Add an emoji alias
Adds an alias for an existing custom emoji in a slack enterprise grid organization.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
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.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Add a star to an item
Stars a channel, file, file comment, or a specific message in slack.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Add call participants
Registers new participants added to a slack call.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Add emoji
Adds a custom emoji to a slack workspace given a unique name and an image url; subject to workspace emoji limits.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
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.
Slackbot and Slack, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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