Automate Reddit Monitoring with GPT-5-Mini, Notion, and Gmail
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 17 nodes and runs on a schedule (every day). Along the way it connects Gmail, Notion and OpenAI.
How it runs
Trigger: On a schedule (every day).
- Define Keywords And Subreddits (Edit Fields (Set)): sets or maps fields
- Split Out: splits a list into separate items
- Define Relevance Criteria (Edit Fields (Set)): sets 1 field: RELEVANCE_CRITERIA
- Define Instructions For Generating Comments (Edit Fields (Set)): sets 1 field: COMMENT_INSTRUCTIONS
- Search Reddit (HTTP Request): calls an HTTP API
- Filter: keeps only the items that match a condition
- Aggregate: combines items into one
- Combine Posts Into A Single Array (Code): runs custom JavaScript code
- Split Out: splits a list into separate items
- Analyze Each Post (OpenAI): uses OpenAI
…plus 6 more steps. See the full node list below.
Services it uses
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
Nodes used (10)
- Gmail
n8n-nodes-base.gmail - Edit Fields (Set)
n8n-nodes-base.set - Schedule Trigger
n8n-nodes-base.scheduleTrigger - Split Out
n8n-nodes-base.splitOut - HTTP Request
n8n-nodes-base.httpRequest - Code
n8n-nodes-base.code - Notion
n8n-nodes-base.notion - Filter
n8n-nodes-base.filter - Aggregate
n8n-nodes-base.aggregate - OpenAI
@n8n/n8n-nodes-langchain.openAi
From the author
Instantly Track Reddit Discussions and Generate Insights Manually monitoring Reddit for relevant discussions can be overwhelming. This automation does all the heavy lifting by automatically searching for keywords across selected subreddits or the entire…