Convert Slack Messages to Notion To-Dos Using Emoji Reactions

This n8n workflow automates the process of converting specific Slack messages into Notion to-do items based on emoji reactions. It allows teams to quickly capture actionable items from their Slack discussions and organize them in Notion.

What it does

This workflow performs the following steps:

1. Listens for Slack Reactions: It continuously monitors a specified Slack channel for new emoji reactions.
2. Filters for Specific Emoji: It filters these reactions, only proceeding if a predefined emoji (e.g., a checkmark or a specific task emoji) is used.
3. Aggregates Reaction Data: It collects relevant details about the message that received the reaction, such as the message content, the user who posted it, and a link to the message.
4. Creates Notion To-Do: It then creates a new page (to-do item) in a specified Notion database, populating it with the Slack message content, a link back to the original Slack message, and other relevant details.

Prerequisites/Requirements

To use this workflow, you will need:

• Slack Account: An active Slack workspace and a Slack app with the necessary permissions (e.g., reactions:read, channels:history, chat:read) to listen for reactions and retrieve message content.
• Notion Account: An active Notion workspace and a Notion integration with access to the database where you want to create the to-do items. You'll need the database ID.
• n8n Instance: A running instance of n8n to host and execute the workflow.

Setup/Usage

1. Import the Workflow:
   • Copy the provided JSON workflow definition.
   • In your n8n instance, go to "Workflows" and click "New".
   • Click the "Import from JSON" button and paste the copied JSON.
2. Configure Slack Trigger:
   • Open the "Slack Trigger" node.
   • Select or create a new Slack API credential. Ensure it has the necessary permissions.
   • Specify the Slack channel(s) you want to monitor for reactions.
   • Set the "Event" to Reaction Added.
3. Configure Filter Node:
   • Open the "Filter" node.
   • Adjust the condition to match the specific emoji reaction you want to trigger the Notion to-do creation. For example, if you want to trigger on a :white_check_mark: emoji, configure the condition to check for that.
4. Configure Notion Node:
   • Open the "Notion" node.
   • Select or create a new Notion API credential. Ensure it has access to the target database.
   • Set the "Operation" to Create and the "Resource" to Page.
   • Provide the Database ID of your Notion to-do database.
   • Map the Slack message data to your Notion database properties. For example:
     • Name property in Notion: Map to the Slack message text (e.g., {{ $json.item.message.text }}).
     • URL property in Notion: Map to the Slack message permalink (e.g., {{ $json.item.message.permalink }}).
     • You might also want to add properties for the user who reacted, the user who posted the message, or the timestamp.
5. Activate the Workflow:
   • Once all nodes are configured, save the workflow.
   • Toggle the workflow to "Active" to start listening for Slack reactions.

Now, whenever a message in your specified Slack channel receives the configured emoji reaction, a new to-do item will automatically be created in your Notion database!