Unique QR Code Coupon System for Lead Generation

From Manual Follow-ups to Automated Growth

If you have ever juggled spreadsheets, CRM entries, and email campaigns just to send a simple coupon to a new lead, you know how draining that can be. Manual work slows you down, introduces errors, and keeps you from focusing on what actually grows your business: building relationships, improving offers, and closing deals.

This is where automation becomes more than a technical trick. It becomes a mindset shift. Instead of reacting to every new lead, you can design a system that welcomes them, rewards them, and captures their data consistently, all while you focus on higher-value work.

The n8n workflow template described here is a concrete, ready-to-use step in that direction. It gives you a complete system for assigning and validating unique QR code coupons, tied directly to your lead generation funnel. Think of it as a starting point for a more automated, scalable, and predictable marketing engine.

Imagine a Smarter Lead Capture Process

Picture this: a visitor fills out a landing page form, instantly receives a unique QR code coupon by email, and when they redeem it, your CRM and Google Sheets update automatically. No duplicate coupons, no forgotten follow-ups, no manual cross-checking.

This n8n workflow template turns that vision into a practical, repeatable process. It connects:

• Your landing page form to capture lead data
• Google Sheets to store and manage unique coupon codes
• SuiteCRM to create and update lead records
• QuickChart.io to generate QR codes for your coupons
• Webhook triggers to validate coupons when they are scanned

The result is a fully automated QR code coupon system that supports your lead generation strategy instead of slowing it down.

The Journey: From Form Submission to Coupon Redemption

Let us walk through the flow as your lead experiences it, and see how n8n quietly handles the work in the background.

1. A Lead Submits the Form

The journey begins when someone fills out your landing page form with their name, surname, email, and phone number. This form submission is the trigger that starts your n8n workflow.

Inside the workflow, the data is first collected and prepared. n8n then checks your Google Sheets document to see if this lead already exists. This duplicate check is crucial. It prevents sending multiple coupons to the same person and keeps your campaigns fair and organized.

2. Screening for Duplicates and Assigning a Unique Coupon

If the lead is identified as new, the automation continues. n8n looks into a dedicated Google Sheet where your pre-generated unique coupon codes are stored. From this list, it retrieves the first available coupon that has not yet been assigned.

This simple step is powerful. It means you can generate a batch of coupons once, store them in Google Sheets, and let the workflow handle the rest. No more copy-paste, no more accidental reuse of codes.

3. Creating the Lead in SuiteCRM

With a fresh coupon code ready, the workflow connects to SuiteCRM. It first obtains an OAuth token using your SuiteCRM credentials, which allows n8n to communicate securely with your CRM.

Using this token, n8n creates a new lead record in SuiteCRM via API. The record includes:

• The lead’s name, surname, email, and phone number
• The unique coupon assigned to that lead

Right after that, the same details are written back to Google Sheets, linking the coupon to the lead. Now both your CRM and your sheet are in sync, with no manual data entry.

4. Sending the Coupon via Email With a QR Code

Next comes the rewarding moment for your lead. The workflow uses QuickChart.io to generate a QR code that encodes the coupon link. This link can lead to a redemption page, a checkout with a discount, or any URL you configure.

n8n then sends an email to the lead, including:

• A personalized message that acknowledges their sign-up
• The unique coupon details
• The QR code image generated from QuickChart.io

From the lead’s perspective, they receive an instant, exclusive reward. From your perspective, the entire process from form submission to coupon delivery is fully automated.

5. Validating the Coupon When the QR Code Is Scanned

The final stage of the journey happens when the lead scans the QR code to redeem their offer. That scan triggers a webhook in n8n, which starts the coupon validation part of the workflow.

Here is what happens behind the scenes:

• n8n reads the coupon data sent by the QR scan.
• It checks your Google Sheet to confirm that the coupon exists.
• It verifies that the coupon has not been used yet.

If the coupon is valid and unused:

• The corresponding lead is fetched and verified.
• The coupon usage is marked as “yes” both in Google Sheets and in SuiteCRM.
• A confirmation response is sent back, so your redemption flow can continue smoothly.

If the coupon is invalid or already used, the workflow responds accordingly, allowing you to handle declined or expired coupons in a consistent way.

Why This n8n Template Is a Stepping Stone

Beyond the technical flow, this template represents a mindset: automate the repetitive, so you can invest energy in strategy and creativity. By implementing this QR code coupon system, you:

• Save time on manual lead entry and coupon handling
• Reduce errors and duplicate coupons
• Improve lead experience with instant, personalized rewards
• Keep data aligned across Google Sheets and SuiteCRM
• Build a foundation you can extend with more automation later

Once this is in place, you can start asking bigger questions: What if every campaign had its own coupon list? What if high-value leads received special offers? What if redeemed coupons triggered follow-up sequences, surveys, or upsell emails?

Automation in n8n grows with you. This template is not the finish line, it is your launchpad.

Customizing the Workflow for Your Business

To make this template truly yours, you only need a few configuration changes. These adjustments connect the workflow to your own CRM, sheets, and email setup.

1. Connect to Your SuiteCRM Instance

In the nodes that interact with SuiteCRM, update the following values:

• SUITECRMURL – set this to your SuiteCRM base URL
• CLIENTID – your SuiteCRM OAuth client ID
• CLIENTSECRET – your SuiteCRM OAuth client secret

These details allow n8n to request an OAuth token and create or update lead records securely in your CRM.

2. Point to the Correct Google Sheets Document

In the Google Sheets nodes, configure:

• Your Google Sheets document ID
• The relevant sheet name where coupons and lead data are stored

Make sure this sheet includes your list of pre-generated unique coupons, along with any columns needed for lead details and coupon usage status.

3. Set Up Your Email Details

Within the email node, update:

• The sender email address
• Any SMTP configuration required by your email provider

You can also customize the email subject and body to match your brand voice, making the coupon delivery feel aligned with your existing communication style.

4. Prepare Your Coupon List

Before running the workflow, make sure you have:

• A list of unique coupon codes pre-generated and stored in your Google Sheet
• Columns that indicate whether a coupon is assigned and whether it has been used

This preparation ensures the workflow can assign coupons efficiently and track their status accurately.

From First Automation to Continuous Improvement

Once you see this template running in your n8n instance, you will likely start spotting new opportunities. Maybe you want to:

• Trigger a follow-up email after a coupon is redeemed
• Tag leads in SuiteCRM based on coupon usage
• Send internal notifications to your sales team when a high-value coupon is scanned
• Add more validation steps or error handling to make the system even more robust

The beauty of n8n is that you can evolve your workflow step by step. Start simple, get it working, then iterate. Each improvement frees a little more of your time and creates a smoother experience for your leads.

Conclusion: Start Automating Your Lead Generation Today

This unique QR code coupon system offers a clear, practical path from manual lead handling to a more automated, integrated, and scalable process. With n8n orchestrating the flow between Google Sheets, SuiteCRM, QuickChart.io, and your email provider, you can focus on strategy while your workflow quietly does the heavy lifting.

Use this template as your first or next step toward a more automated business. Adapt it, extend it, and let it inspire other workflows that support your growth.

Get started today, and transform your lead generation campaigns with personalized, automated QR code coupons.

Disclaimer: This system is a basic implementation and can be further enhanced with additional validation, logging, and error handling as your needs grow.