Make important Slack decisions easier to revisit
A simple reaction can flag a decision for a Gamma recap that is easier to find and share.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Action
Generate a Gamma
Create a new gamma generation. use to produce an ai-generated presentation/content. docs: https://developers.gamma.app/reference/generate-a-gamma
Why this helps
Decisions made in fast-moving discussions can disappear under later messages, leaving people unsure what was agreed.
- Give decisions a durable presentation format
- Keep rationale close to the chosen direction
- Make follow-up questions visible
Setup
Build it in a few focused steps.
- 1Connect Slack and Gamma to Notis once through the portal.
- 2Create a new automation named Decision Recap Deck.
- 3Write a plain-language instruction asking Notis to make a Gamma recap from the message receiving the chosen reaction, including the decision, rationale, and unresolved questions.
- 4Choose the Slack message reaction added trigger, set the intended emoji in the trigger if available, and choose a report channel.
- 5Test by reacting to one real decision message and reviewing the recap.
Questions about this workflow
Can a reaction identify which messages should be recapped?
The reaction trigger supports optional channel and emoji filtering. Use the prompt to describe what makes a message a decision worth recapping.
What should the recap include?
You can ask for the decision, context, rationale, owner or follow-up when present, and open questions.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Gamma. A trigger fires from one place; an action lands in another.
Slack triggers
Gamma actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Generate a Gamma
Create a new gamma generation. use to produce an ai-generated presentation/content. docs: https://developers.gamma.app/reference/generate-a-gamma
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Get Gamma File URLs
Retrieve generation status and file urls. poll this endpoint every ~5 seconds until status is 'completed'. docs: https://developers.gamma.app/reference/get-gamma-file-urls
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Connect any two apps with Notis in the middle.
Slack and Gamma, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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