Summarize long emails: Slack, PostgreSQL & Gmail
Fires the moment a webhook arrives across Slack, PostgreSQL and Gmail, hands the decision to an AI agent with its own tools, then branches on the check before anything is written. Built for ocr & extraction, around a "Keep Valid Documents" step, in 17 documented nodes.
Summarize long emails with PostgreSQL and Gmail in real time. An original, ready-to-import n8n workflow built around the 'AI Summarize & Route' pattern for legal & compliance. It fires on a webhook and orchestrates 17 nodes across Slack, PostgreSQL, Gmail. It uses n8n's LangChain AI nodes (Agent/Chain + chat model). Retry-on-fail is enabled on external calls. Import the JSON, add your credentials, and adapt the parameters. What used to take a morning now runs on its own.
Key benefits
- ✓Keeps Slack and PostgreSQL in step for ocr & extraction, without anyone re-typing a row
- ✓A failed Slack or PostgreSQL call is retried rather than dropped, at any of the 17 nodes in this ocr-&-extraction build
- ✓Branches rejoin before Slack, so a ocr-&-extraction run reports once rather than 17 times
- ✓The ocr-&-extraction AI step is isolated from Slack, so models swap without touching the other 17 nodes
- ✓Fans the same result out to Gmail in the same run, for ocr & extraction
Use cases
- →Teams keeping Slack and PostgreSQL aligned by hand for ocr & extraction
- →Ocr & extraction work that needs a judgement call per item before it reaches Slack
- →Pushing ocr-&-extraction events into Slack and PostgreSQL the moment they land, not on the next poll
- →Ocr & extraction work where "Keep Valid Documents" is still a manual step before Slack
Integrations
Workflow preview (17 nodes)
The template's actual node layout and connections. Node parameters and credential slots unlock with the download.
What's inside (17 nodes)
A look at the node types this workflow uses. No purchase required — full parameters and credentials are yours after you buy.
Agent tools included (2)
An AI Agent is only as capable as the tools wired into it. These are read from the template's own graph — every one is a real node in the file you download.
- Search Reference Wiki · Wikipedia
- Think It Through · Scratchpad reasoning
This agent runs without conversation memory - each run starts from the incoming request.
From download to running in 3 steps
- 1Import. In n8n, open Workflows → menu → “Import from File” and pick the downloaded JSON.
- 2Connect. Add your own credentials on the app nodes - n8n highlights exactly which ones need them.
- 3Activate. Run it once to test, then toggle Active. The automation is live.
What you'll learn
Advanced levelAdds branching depth and audit logging on top of the core pattern.
- •Routing classified output into separate action branches
- •Rejoining parallel branches with Merge so the run reports once
- •Moving data between PostgreSQL, Slack and Gmail in a single run
Every node carries its own documentation on the canvas, plus notes explaining why the architecture was built this way, a credential setup guide, troubleshooting, and three practice exercises. Sample data comes pinned to the trigger, so you can hit Execute and watch data flow before connecting a single account.
Common questions
What exactly do I get?
The complete, ready-to-import n8n workflow as a JSON file, delivered instantly after payment. Import it into your own n8n (cloud or self-hosted), add your credentials, and it runs.
How do I import it into n8n?
In n8n, open Workflows, click the three-dot menu, choose “Import from File”, and select the downloaded JSON. Then connect your own app credentials on the highlighted nodes.
Do I need anything else for it to work?
You need your own n8n instance and accounts/credentials for the apps this workflow connects to (Slack, PostgreSQL, Gmail). No coding is required.
What if it doesn't work for me?
If the file is faulty, won't import, or isn't as described, contact us within 7 days and we'll fix it or refund you - see our refund policy.
Can I modify or resell it?
You can freely adapt and use it in your own or your clients' projects. Reselling or redistributing the template file itself is not permitted.
Related templates
Issue contracts: Gmail
Ocr & extraction on n8n: runs when a webhook arrives across Gmail, Slack and PostgreSQL, starting at "Gather API Numbers". Rolls the rows up into a few numbers. 13 documented nodes.
Distill documents: PostgreSQL + sentiment
Ocr & extraction on n8n: runs when a webhook arrives across PostgreSQL, Slack and Gmail, starting at "Stamp & Shape Document". Scores the sentiment of every message. 17 documented nodes.
Generate quotes: PostgreSQL
Ocr & extraction on n8n: runs when a webhook arrives across PostgreSQL, Google Sheets, Slack and Gmail, starting at "Download Source File". Parses the incoming file into rows. 21 documented nodes.
Create contracts with Slack & PostgreSQL
Ocr & extraction on n8n: runs when a webhook arrives across Slack, PostgreSQL and Gmail, starting at "Gather API Numbers". Rolls the rows up into a few numbers. 13 documented nodes.