How to Build an Email List from Google Maps

To build an email list from Google Maps, use LeadFinder to extract business websites from Maps listings, then use Hunter.io to find the email addresses for each domain. This two-step process creates a targeted, verified email list of business owners in any niche and any city. A typical search yields 28-42 verified emails from 100 Google Maps businesses, at a combined cost of $0.15-0.25 per email.

Google Maps itself does not display business email addresses. But it does display business websites, and 93% of business websites contain at least one email address. By combining a Google Maps extraction tool with an email finder, you can build highly targeted email lists in minutes.

Here is the complete step-by-step process.

Step 1: Extract Business Data from Google Maps

Go to LeadFinder and search for your target business type and city. For example, "real estate agents in Dallas." The tool will return up to 100 businesses with:

• Business name
• Phone number
• Website URL
• Full address
• Google rating (1-5 stars)
• Total review count

You can start with 5 free leads to test the process. For the full list of 100, pay $5.

Pro tip: Filter for businesses with 4+ star ratings and 50+ reviews. These are established, successful businesses that are more likely to invest in services you offer.

Step 2: Find Email Addresses with Hunter.io

Take the website URLs from LeadFinder and run them through Hunter.io's domain search. For each domain, Hunter returns all known email addresses.

You can do this manually (paste each domain) or use Hunter's API or bulk search feature. The free tier gives you 25 domain searches per month.

Using the LeadFinder API + Hunter API Together

// Step 1: Get businesses from LeadFinder API
const response = await fetch(
  'https://leadscraper-coral.vercel.app/api/v1/leads?niche=dentists&city=Chicago'
);
const leads = await response.json();

// Step 2: Find emails for each business website
for (const lead of leads.data) {
  if (lead.website) {
    const domain = new URL(lead.website).hostname;
    const hunterRes = await fetch(
      `https://api.hunter.io/v2/domain-search?domain=${domain}&api_key=YOUR_KEY`
    );
    const emails = await hunterRes.json();
    console.log(lead.name, emails.data.emails);
  }
}

Step 3: Verify Email Addresses

Before sending any emails, verify them. Invalid emails increase your bounce rate, which damages your sender reputation. Use Hunter's built-in verifier (50 free/month) or a service like NeverBounce, ZeroBounce, or Clearout.

Target: under 3% bounce rate. If your bounce rate exceeds 5%, your emails will start landing in spam folders.

Step 4: Set Up Your Email Campaign

Use a cold email platform like Instantly.ai ($30/month) or Lemlist ($59/month). These tools manage:

• Email warmup: Gradually building sender reputation over 2-3 weeks
• Sending rotation: Distributing emails across multiple mailboxes
• Personalization: Inserting business name, rating, and other data from LeadFinder
• Follow-up sequences: Automatic follow-ups 3-5 days after no response

Step 5: Write Emails That Get Replies

The data from LeadFinder enables powerful personalization. Here is a template that uses Google Maps data to feel personal:

Subject: Saw your {rating} stars on Google, {business_name}

Hi {first_name},

I was looking at {business_name} on Google Maps and noticed
your {rating}-star rating across {review_count} reviews.
That puts you in the top 10% of {niche} in {city}.

I help businesses like yours [your value proposition].

Would it make sense to chat for 10 minutes this week?

Best,
{your_name}

P.S. I especially liked [specific detail from their website].

Expected Results

Scaling Up: 1,000+ Emails Per Month

To scale beyond manual efforts:

1. Run 10 LeadFinder searches per month across different niches/cities ($50)
2. Use Hunter's $49/month plan for 500 domain searches
3. Use Instantly.ai ($30/month) for sending
4. Total: $129/month for ~400 verified email leads

At a 2% reply rate, that is 8 warm conversations per month. If you close 25% of those, that is 2 new clients per month from a $129 investment.

Frequently Asked Questions