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Gmail and HighLevel integration

Save yourself the work of writing custom integrations for Gmail and HighLevel and use n8n instead. Build adaptable and scalable Communication, HITL, workflows that work with your technology stack. All within a building experience you will love.

How to connect Gmail and HighLevel

Create a new workflow and add the first step

In n8n, click the "Add workflow" button in the Workflows tab to create a new workflow. Add the starting point – a trigger on when your workflow should run: an app event, a schedule, a webhook call, another workflow, an AI chat, or a manual trigger. Sometimes, the HTTP Request node might already serve as your starting point.

Gmail and HighLevel integration: Create a new workflow and add the first step

Automated sales follow-up system using HighLevel, Gmail, Slack & Google Sheets

📘 Description: This workflow automates sales contact follow-ups and engagement tracking by integrating HighLevel CRM, Gmail, Slack, and Google Sheets. It fetches all contacts from HighLevel, filters inactive contacts, sends personalized follow-up emails, checks for responses, and notifies the sales team accordingly. It eliminates manual follow-up tracking, ensures timely outreach, and provides real-time notifications — helping sales teams maintain engagement, respond promptly, and improve lead conversion. ⚙️ What This Workflow Does (Step-by-Step) 🟢 Manual Trigger – Starts the automation manually Action: Initiates the workflow for immediate follow-up execution or testing. 📦 Fetch Contacts from HighLevel CRM Action: Retrieves all contacts from HighLevel, including names, emails, and metadata for full visibility. 🔍 Validate Deal Fetch Success (IF Node) Action: Verifies that fetched contacts contain valid IDs. ✅ True Path: Continues to filter inactive contacts. ❌ False Path: Logs invalid or missing contacts to Google Sheets for auditing and troubleshooting. 🧹 Filter Contacts with No Response Action: Selects contacts who have not replied in the last 24 hours, ensuring follow-ups target only inactive leads. 📊 Get Most Recent Contact Action: Retrieves the latest contact based on last updated time and calculates hours since last interaction. 📧 Send Follow-Up Email to Contact Action: Sends a personalized email to the contact, asking for confirmation or questions and including dynamic details like name and last interaction time. ⏳ Wait for 24 Hours Before Next Action Action: Pauses the workflow for 24 hours to allow contacts sufficient time to respond. 📨 Retrieve Email Thread for Response Action: Fetches the most recent Gmail thread using the thread ID to check if the contact has replied. ✅ Check If Contact Responded with “Yes” (IF Node) Action: Evaluates if the response contains the word “yes”. ✅ True Path: Triggers Slack notification for positive response. ❌ False Path: Triggers Slack notification for no response. 💬 Notify Sales Team in Slack if Response Received Action: Sends a Slack message notifying the team of a positive reply, including contact details and response snippet. ⚠️ Notify Sales Team in Slack if No Response Action: Sends a Slack message notifying the team that the contact hasn’t replied, including contact info, follow-up timestamp, and waiting status. 🚨 Log Fetch or Validation Errors (Error Handling) Action: Records any fetch or validation errors in Google Sheets for easy review and troubleshooting. 🧩 Prerequisites HighLevel CRM API OAuth credentials Gmail OAuth2 credentials for sending and fetching emails Google Sheets document for error logging Slack API credentials for notifications 💡 Key Benefits ✅ Fully automated follow-up workflow for sales contacts ✅ Timely notifications for positive and inactive responses ✅ Personalized emails to contacts ✅ Transparent tracking and logging of errors ✅ Seamless integration across HighLevel, Gmail, Slack, and Google Sheets 👥 Perfect For Sales teams managing multiple leads Marketing teams ensuring lead engagement Startups scaling outreach efforts Organizations using HighLevel CRM + Gmail + Slack for sales follow-ups

Build your own Gmail and HighLevel integration

Create custom Gmail and HighLevel workflows by choosing triggers and actions. Nodes come with global operations and settings, as well as app-specific parameters that can be configured. You can also use the HTTP Request node to query data from any app or service with a REST API.

Gmail supported actions

HighLevel supported actions

Gmail and HighLevel integration details

Gmail

Gmail

Gmail is a free of charge email service offered as part of Google Workspace. It is used by individuals and organizations to send and receive emails and communicate internally and externally. It remains the world’s most widely used email service.

HighLevel

HighLevel

HighLevel is a comprehensive sales and marketing platform that can offer agencies everything they need, from generating new leads, creating read-to-use websites, to preparing forms and surveys and much more options and features.

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FAQ about Gmail integrations

Need help setting up your Gmail and HighLevel integration?

Discover our latest community's recommendations and join the discussions about Gmail and HighLevel integration.

  • jake chard

    How do I remove n8n Email footer in Gmail node send message?

    jake chard

    Each email sent has “This email was sent automatically with n8n” in the footer or after the email. How do I remove this please?

    Open topic
  • Jan Koch

    Sending attachment via Gmail

    Jan Koch

    Describe the problem/error/question I am trying to send an email with an attachment using the Gmail node and get an error that I don’t understand. I am able to download that file from the original email and upload it to …

    Open topic
  • FawenYo

    Failed to send Gmail attachment

    FawenYo

    Describe the problem/error/question I’m trying to send an HTML file in the Gmail attachment, but it just raise an error. This question is similar to Sending attachment via Gmail , but I just couldn’t get it work …

    Open topic
  • Jean-Pierre GARNIER

    Gmail node subject text encoding issue

    Jean-Pierre GARNIER

    Describe the problem/error/question Hi, I’m facing an encoding problem while sending email with gmail node for every char with and accent (é,à,ô,î…). I noticed that this problem doesn’t occurs when i’m directly writing …

    Open topic
  • Anirudh Tugawe

    Update Google Sheets After sending Email

    Anirudh Tugawe

    Hi everyone, I’m working on a workflow where I’m using Google Sheets to get input data. I have a loop set up that correctly reads the data and processes it: it takes a Word document template, app…

    Open topic

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Why

Why use n8n to integrate Gmail with HighLevel

Handle branching, merging and iteration easily. Pause your workflow to wait for external events.

Re-run single steps to test changes in no time. And pin your data to avoid generating trigger events every time you execute.

Your data is displayed alongside your settings, making edge cases easy to track down.

Use 1000+ workflow templates available from our core team and our community.

Copy and paste, easily import and export workflows.

Simple enough to 
understand + sophisticated 
enough to ship