This is a low-effort, high-potential side hustle I accidentally stumbled on… and now Iām sharing it before I turn it into a āmasterclassā and charge $997.
Hereās the deal:
You can use ChatGPT to find real leads (like HVAC companies, plumbers, dentists), organize them into a table, and start cold emailing them your offer.
Then, to scale it? You throw in Lindy, the AI assistant that does 80% of the grunt work for you. While you nap, eat, or do literally anything else.
Letās break it down.
š§° Step 1: Use ChatGPT to Get Free Leads
šÆ The Prompt:
Just copy/paste this into ChatGPT:
āGive me a list of 10 air conditioning companies based in Berlin. Include their name, website, and email address. Organize the info into a markdown table.ā
š Repeat this for:
Other cities (Hamburg, Munich, Stuttgart⦠go global!)
Other industries (plumbers, gyms, dentists, dog groomers)
š” Want more leads per run? Just change it to āGive me a list of 20ā¦ā
Want niche B2B? āGive me a list of commercial HVAC companiesā¦ā
š What Youāll Get:

Once you get that sweet table of prospects, youāre officially in business.
š© Step 2: Write a Killer Cold Email
This is where most people overthink it. Donāt be that guy.
Keep it short, personal, and valuable.
āļø Copy-Paste Cold Email Script:
Subject: Quick win for your website
Hi [First Name],
I came across your business, [Business Name], while looking for local HVAC pros in Berlin. Your site looks great ā but I had a few ideas to help you get even more local leads.
I specialize in helping companies like yours improve visibility with simple SEO and Google Business tweaks. Would you be open to a quick 10-minute call next week?
Best,
[Your Name]
[Your Website or LinkedIn]
š” Pro Tip: Personalize the first line! Use ChatGPT again:
āWrite a friendly intro line for a cold email to āKlimaKƶnig GmbHā based on their website.ā
Now youāre doing high-touch cold outreach… at scale.
š¤ Step 3: Automate It with Lindy (The Fun Part)
Lindy is your virtual assistant that can do the WHOLE process on autopilot. No more copy-pasting like a caveman.
š ļø Lindy Setup (Step by Step)
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Sign up at Lindy and get to know it!
(Itās free to start, no stress.) -
Create a new āAssistantā
Call it something fun. Like āLead Hustler 3000.ā -
Give it these instructions:
“Every day at 9 AM, search for 10 HVAC companies in a selected city (e.g. Berlin), gather their name, website, and email, and put the results in a Google Sheet. Then, generate a personalized cold email using the provided script. Send the email via Gmail to each contact.”
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Connect these tools:
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Gmail (to send emails)
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Google Sheets (for storing contacts)
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ChatGPT API or built-in AI (for writing)
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Optional: Zapier or Make.com if you want to expand this beyond Lindy
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Schedule the workflow
Run it every morning, or even better ā trigger it manually when you want to hit a new city or niche.
š Advanced Hustle Tips
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Want to go full agency? Use this to get SEO/web/social media clients.
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Offer your service as a monthly subscription ā $250/month for ālocal visibility optimization.ā
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Upsell them on:
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Google Business optimization
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Site speed fixes
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Review generation
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Use ChatGPT to write reports and monthly check-ins automatically.
š„ TL;DR ā The Lazy Lead Gen System
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Use ChatGPT to find 10-20 leads per city, per niche
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Drop that into a table
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Use the cold email script to pitch your services
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Automate everything with Lindy (or Zapier if you’re spicy)
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Charge monthly, scale globally
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Eat tacos while your AI assistant hustles for you