Verify email content against Google Sheets and Gmail logs

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1. Workflow Overview

How it works Input: Google Sheets provides “Expected Content” rows (one per block/section). HTML Parse: A JS/HTML step extracts Actual Content from the email’s HTML (from Gmail or any provided HTML...

Best for

Document Extraction automation workflows
AI Summarization automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.manualtrigger, n8n-nodes-base.gmail, n8n-nodes-base.html, n8n-nodes-base.merge, n8n-nodes-base.code, n8n-nodes-base.stickynote, n8n-nodes-base.googlesheets

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Sasikala Jayamani.

Original n8n.io source

1.1 Workflow description

Title: Verify email content against Google Sheets and Gmail logs
Workflow name: Verify email content against Google Sheets and Gmail logs

How it works

Input: Google Sheets provides “Expected Content” rows (one per block/section).
HTML Parse: A JS/HTML step extracts Actual Content from the email’s HTML (from Gmail or any provided HTML source).
Merge: Expected and Actual items are merged into aligned pairs for comparison.
Compare: A JS node compares strings and produces a Result (Pass/Fail). (This flow intentionally stops at the result and does not compute a mismatch reason.)
Log: The workflow writes back “Actual Content” + “Result” to Google Sheets for reporting.

Setup steps

Google Sheets Create a sheet with columns: SectionId, ExpectedContent, ActualContent, Result. Populate SectionId + ExpectedContent for each content block you want to verify.
Email HTML source Use a Gmail node to pull message HTML or use HTTP Request/Read Binary File + HTML/JS to supply the HTML.
Extraction logic (JS/HTML) Implement selectors/XPaths/DOM parsing for each SectionId to extract Actual Content. Normalize whitespace and trim HTML entities for a fair comparison.
Merge & Compare Merge on SectionId to align Expected ↔ Actual. In the Code (JS) node, compare strings and set Result to Pass if equal (or meets your rule), otherwise Fail.
Write back Use Google Sheets to update ActualContent and Result for each row.

Requirements

n8n with access to: Google Sheets, Code/HTML, and (optionally) Gmail nodes. A Google Sheets document with at least these columns:

SectionId (or Key) ExpectedContent ActualContent (output) Result (output: Pass/Fail)

Access to the email HTML (Gmail node, HTTP fetch, or paste‐in).

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - When clicking ‘Execute workflow’

Type / Role: n8n-nodes-base.manualTrigger - manualTrigger
Config choices: Version 1

Block 2 - Get many messages

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.2

Block 3 - Extracting Preheader From HTML

Type / Role: n8n-nodes-base.html - html
Config choices: Version 1.2

Block 4 - Combine HTML, Expected Content and Preheader

Type / Role: n8n-nodes-base.merge - merge
Config choices: Version 3.2

Block 5 - Extract Actual Content and Results

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 6 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 7 - Sticky Note3

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 8 - Log Content Checks to Excel

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 9 - Load Expected Content

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

3. Summary Table

Workflow	Verify email content against Google Sheets and Gmail logs
Complexity	intermediate
Nodes	9
Categories	Document Extraction, AI Summarization
Author	Sasikala Jayamani
Published	20 Feb 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/13530/13530.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Document Extraction workflows AI Summarization workflows

Frequently asked questions

What does Verify email content against Google Sheets and Gmail logs do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Document Extraction, AI Summarization use case.

Sasikala Jayamani

3 workflows

Nodes

n8n-nodes-base.manualtrigger n8n-nodes-base.gmail n8n-nodes-base.html n8n-nodes-base.merge n8n-nodes-base.code n8n-nodes-base.stickynote n8n-nodes-base.googlesheets

Complexity

intermediate

Published 20 Feb 2026

Likes 0

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Install path: /data/workflows/13530/13530.json

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Verify email content against Google Sheets and Gmail logs

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

How it works

Setup steps

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - When clicking ‘Execute workflow’

Block 2 - Get many messages

Block 3 - Extracting Preheader From HTML

Block 4 - Combine HTML, Expected Content and Preheader

Block 5 - Extract Actual Content and Results

Block 6 - Sticky Note

Block 7 - Sticky Note3

Block 8 - Log Content Checks to Excel

Block 9 - Load Expected Content

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions