Generate overdue lead follow-up Gmail drafts with Google Sheets and Gemini

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1. Workflow Overview

Automatically identifies overdue sales leads and generates personalized follow up emails using AI. How it works 1. Runs every weekday 2. Reads leads from Google Sheets 3. Filters leads with no cont...

Best for

Lead Nurturing automation workflows
AI Summarization automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.googlesheets, @n8n/n8n-nodes-langchain.chainllm, @n8n/n8n-nodes-langchain.lmchatgooglegemini, n8n-nodes-base.gmail, n8n-nodes-base.httprequest, n8n-nodes-base.scheduletrigger, n8n-nodes-base.if, n8n-nodes-base.filter

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Generate overdue lead follow-up Gmail drafts with Google Sheets and Gemini
Workflow name: Generate overdue lead follow-up Gmail drafts with Google Sheets and Gemini

Automatically identifies overdue sales leads and generates personalized follow-up emails using AI.

How it works

Runs every weekday
Reads leads from Google Sheets
Filters leads with no contact for 5+ days
Downloads last meeting transcript from Google Drive
Uses Google Gemini to write a personalized email
Saves the email as a Gmail Draft for review
Updates lead status in the Sheet

Setup

Google Sheets with columns: Current Status, Last Contact, Name, Company, Email, Meeting Transcript, Sales Rep
Google Drive access for transcript files
Google Gemini API key (free from Google AI Studio)
Gmail account
Slack workspace

Supported file types

Notes

Emails are saved as drafts only — not sent automatically
Supported lead statuses: New
Skips leads with status: Draft Created, Sent, Closed

Inspiration

This workflow was built to solve a real problem at an educational institute. The sales team needed someone to remind them about follow-ups and draft personalized emails — but hiring a personal assistant wasn't financially feasible.

Based on that, this system acts as that assistant: it tracks overdue leads, reads meeting transcripts, and writes personalized follow-up emails automatically.

I kept this stack free where possible — using Google Gemini's free tier for AI. For small sales teams, I believe the daily token limits are more than sufficient, making this a zero-cost automation.

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 - Read Leads Sheet

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.2

Block 2 - Basic LLM Chain

Type / Role: @n8n/n8n-nodes-langchain.chainLlm - chainLlm
Config choices: Version 1.9

Block 3 - Google Gemini Chat Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatGoogleGemini - lmChatGoogleGemini
Config choices: Version 1

Block 4 - Gmail - Create Draft

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.1

Block 5 - HTTP - Download File from Google Drive

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 6 - Daily 9AM Trigger

Type / Role: n8n-nodes-base.scheduleTrigger - scheduleTrigger
Config choices: Version 1.1

Block 7 - Filter - Active Leads Only

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.3

Block 8 - Filter - 5+ Days No Contact

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

Block 9 - Check - Transcript Exists?

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

Block 10 - Alert - Missing Transcript

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

Block 11 - Alert - Download Failed

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

Block 12 - Alert - Unsupported File Type

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

Block 13 - Notify - Draft Ready

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

Block 14 - Extract Text: txt

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

Block 15 - Extract Text: Pdf

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

Block 16 - Update FollowUp Status with Dates

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

Block 17 - Sticky Note

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

Block 18 - Sticky Note1

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

Block 19 - Sticky Note3

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

Block 20 - Sticky Note4

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

Block 21 - Sticky Note5

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

Block 22 - Sticky Note2

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

Block 23 - Transcript Data From Files

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

Block 24 - Check - Supported File Type

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.3

Showing the first 24 of 25 workflow blocks. Download the JSON for the full node graph.

3. Summary Table

Workflow	Generate overdue lead follow-up Gmail drafts with Google Sheets and Gemini
Complexity	advanced
Nodes	25
Categories	Lead Nurturing, AI Summarization
Author	Nour
Published	01 Apr 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/14578/14578.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 Lead Nurturing workflows AI Summarization workflows

Frequently asked questions

What does Generate overdue lead follow-up Gmail drafts with Google Sheets and Gemini 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 Lead Nurturing, AI Summarization use case.

Nour

1 workflow

Nodes

n8n-nodes-base.googlesheets @n8n/n8n-nodes-langchain.chainllm @n8n/n8n-nodes-langchain.lmchatgooglegemini n8n-nodes-base.gmail n8n-nodes-base.httprequest n8n-nodes-base.scheduletrigger n8n-nodes-base.if n8n-nodes-base.filter

Complexity

advanced

Published 01 Apr 2026

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/14578/14578.json

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Generate overdue lead follow-up Gmail drafts with Google Sheets and Gemini

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

How it works

Setup

Supported file types

Notes

Inspiration

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Read Leads Sheet

Block 2 - Basic LLM Chain

Block 3 - Google Gemini Chat Model

Block 4 - Gmail - Create Draft

Block 5 - HTTP - Download File from Google Drive

Block 6 - Daily 9AM Trigger

Block 7 - Filter - Active Leads Only

Block 8 - Filter - 5+ Days No Contact

Block 9 - Check - Transcript Exists?

Block 10 - Alert - Missing Transcript

Block 11 - Alert - Download Failed

Block 12 - Alert - Unsupported File Type

Block 13 - Notify - Draft Ready

Block 14 - Extract Text: txt

Block 15 - Extract Text: Pdf

Block 16 - Update FollowUp Status with Dates

Block 17 - Sticky Note

Block 18 - Sticky Note1

Block 19 - Sticky Note3

Block 20 - Sticky Note4

Block 21 - Sticky Note5

Block 22 - Sticky Note2

Block 23 - Transcript Data From Files

Block 24 - Check - Supported File Type

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