B2B Prospecting: How to Obtain Qualified Email Lists

B2B prospecting remains one of the most time-consuming business activities. Finding 500 qualified prospects manually? Count on at least 40 hours. With the right method and tools, you can do the same in 30 minutes.

This article shows you exactly how.

You will discover why 73% of sales teams fail to generate qualified B2B leads, the 3 approaches that really work, and how to choose the right one based on your industry.

---

What is B2B Sales Prospecting?

B2B sales prospecting involves identifying and contacting businesses that are likely to purchase your product or service.

Unlike B2C, where you target individuals based on their consumption habits, B2B requires a radically different approach.

Here, you analyze: - The industry - The size of the company (number of employees) - The revenue - The geographical location - The technologies used - The decision-making structure

Concrete example: You sell inventory management software. In B2C, you target "individuals who have a small business." In B2B, you target "independent restaurants with 5-15 employees, in urban areas, without a computerized management system."

The difference? B2B forces you to be precise. Very precise.

---

Why B2B Prospecting Has Become Essential

In 2024, 92% of B2B buyers start their search online. But here’s the catch: they are not looking for you directly.

They are looking for a solution to a specific problem.

If you passively wait for them to find you, you will wait a long time. Hence the importance of active prospecting: going to find prospects where they are, with the right message, at the right time.

Companies that practice structured B2B prospecting generate 50% more qualified leads than those that do not. And 50% more leads means 50% more potential revenue.

---

The 3 Essential Criteria for Choosing Your B2B Email List

Before diving into any prospect list, ask yourself these three questions.

Criterion 1: Do You Have the Necessary Data?

Many sales teams make the mistake of requesting a list with 100 columns of data. Then they use only 4.

What you really need: - Company name - Email (main or general contact) - Phone - Address - Industry - Company size

That’s it. These 6 data points are sufficient for 95% of B2B prospecting.

Everything else (social media, number of reviews, technologies used) is a bonus. Useful, but not essential to get started.

Tip: Before purchasing or extracting a list, precisely list the 5-10 data points you will actually use in your campaign. No more.

Criterion 2: Does the List Comply with GDPR?

It’s simple: the data you use must be publicly accessible.

If an email is visible on a company’s website, you can retrieve it. If a phone number is listed in a public business directory, you can use it.

However, if you retrieve private data (personal emails extracted from LinkedIn without consent, for example), you violate GDPR.

GDPR fine: up to €20 million or 4% of annual revenue. So, it’s no joke.

The good news? All "classic" B2B prospecting data (business emails, company phones, addresses) are publicly accessible. You’re safe.

Criterion 3: Is the List Regularly Updated?

A prospect list is like milk. The older it gets, the less it’s worth.

Each month, 5-10% of businesses change addresses, contacts, or simply close. A list that is 6 months old has already lost 30-60% of its value.

Check: - How often is the data updated? (Daily, weekly, monthly?) - When was the list last generated? - Is there a history of updates?

A good data provider updates its databases at least monthly. The best do it weekly or daily.

---

The 3 Solutions to Obtain a Qualified B2B Email List

Solution 1: Buy a Ready-Made List

How it works: You pay a company that sells pre-compiled prospect lists. You download, import, and start prospecting.

Advantages: - No technical effort - Immediate delivery - Can be inexpensive

Disadvantages: - Unpredictable data quality - No control over segmentation - Non-personalized list - No updates included - You often buy data you won’t use

Typical cost: €300-€2,000 for 5,000 contacts, one-time fee.

Verdict: Acceptable for a one-off test. Not recommended for regular prospecting.

Example: You buy a list of "Restaurants in France." You receive 50,000. You only use 2,000 (those in your region). You paid for 48,000 useless contacts.

Solution 2: Create Your Own List via Lead Magnets

How it works: You create attractive content (guide, template, tool) and offer it in exchange for an email address.

Advantages: - Ultra-qualified leads (they have shown interest) - Explicit consent (GDPR-friendly) - You build an audience - Very low cost (just the time to create)

Disadvantages: - Very slow (generating 500 qualified leads = several months) - Requires an existing audience - Only works if your content is truly attractive

Typical cost: €0 (apart from your time)

Verdict: Excellent for the long term. Too slow if you need leads now.

Example: You create a "Guide to the 50 Best CRM Tools for SMEs." You offer it for free in exchange for an email address. In 3 months, you collect 300 emails from interested prospects.

Solution 3: Extract Data from a Public Database (Google Maps, Directories, etc.)

How it works: You identify a source of public data (Google Maps, Yellow Pages, commercial register) and extract contact information automatically.

Advantages: - Data always up to date (extracted in real-time) - Highly customizable (you choose exactly who to target) - Very low cost (a few euros for thousands of contacts) - You have total control

Disadvantages: - Requires a technical tool - Needs learning how to use the tool - Less data per contact than a purchased list

Typical cost: €44-€449/month for unlimited access

Verdict: The best solution for 80% of sales teams.

Example: You sell B2B cleaning services. You extract all restaurants, hotels, and offices within a 50 km radius of your city. You get 2,000 prospects in 5 minutes. Cost: €5.

---

Google Maps: The Goldmine of Data for B2B Prospecting

If you had to choose ONE data source for B2B prospecting, it would be Google Maps.

Here’s why.

Why Google Maps Dominates Other Sources

Google Maps contains listings for over 200 million businesses worldwide. In France alone, there are over 50 million listings.

These listings include: - Company name - Full address - Phone - Website - Opening hours - Photos - Customer reviews and ratings - Social media

Industry coverage: More than 4,000 categories of businesses are listed. Restaurants, plumbers, marketing agencies, dental practices, hairdressers, architects, electricians... it’s all there.

Concrete Benefits for Your Prospecting

Benefit 1: Constantly Updated Data

Businesses continuously update their Google Maps listings. When a restaurant changes its phone number, the listing is updated within hours, not months.

The result: your data is always fresh.

Benefit 2: Precise Geographical Segmentation

You can target: - An entire city - A radius of X km around an address - A department, region, country - A specific neighborhood

Benefit 3: Guaranteed GDPR Compliance

All data on Google Maps is publicly accessible. No legal issues.

Benefit 4: Access to Emails from Websites

Google Maps provides the company’s website. By visiting this site, you often find a contact email (or you can extract it automatically).

Benefit 5: Behavioral Data

You see the number of reviews, average rating, and volume of local searches. This helps you identify "healthy" businesses vs those in trouble.

Real Use Case Example

You are an SEO agency. You sell local SEO services.

Your ideal client: independent restaurants with 10-50 employees, in urban areas, with fewer than 20 Google reviews (a sign they are not doing digital marketing).

Traditional approach: You call the Yellow Pages, download a generic list of 10,000 restaurants, and manually sort through 500. Time: 15 hours.

Google Maps approach: You search for "restaurants" in your area, filter by number of reviews (0-20), and export 500 contacts in 3 minutes. Time: 5 minutes.

The difference: 14h55 saved for exactly the same result.

---

How to Extract Data from Google Maps: The Technical Method

If you’ve decided to use Google Maps as a prospect source, here’s how to do it.

Step 1: Identify Your Ideal Prospect

Before doing anything, answer these questions:

• Industry: What Google Maps category are you targeting? (e.g., restaurants, plumbers, marketing agencies)
• Location: What geographical area? (city, region, country)
• Size: Minimum/maximum number of employees?
• Quality indicators: Minimum number of reviews? Minimum average rating?
• Other criteria: Claimed listing? Website present? Active social media?

Concrete example: - Industry: Dental practices - Location: Île-de-France - Size: 3-20 employees - Quality criterion: More than 10 reviews (a sign that the practice is established)

Step 2: Search on Google Maps

Open Google Maps. Type your search with filters.

Example: "Dentist Paris"

Google Maps displays the results. You see the listings, reviews, ratings.

Problem: Google Maps only displays a maximum of 120 results per search. If you target "all plumbers in France," you have 50,000. You can’t see them all manually.

Step 3: Extract the Data (2 Approaches)

Approach A: Manual Extraction (for Small Volume)

If you need 50-100 contacts, you can copy them manually.

Estimated time: 2-3 hours for 100 contacts.

Extracted data: Name, address, phone, website (if visible).

Verdict: Feasible for a test, but not scalable.

Approach B: Automated Extraction (for Large Volume)

You use a tool that automates the extraction. The tool: 1. Searches Google Maps 2. Scans all results (not just the first 120) 3. Extracts data from each listing 4. Exports everything to CSV/Excel

Estimated time: 5-30 minutes for 5,000+ contacts.

Extracted data: Name, address, phone, website, email (enriched from the site), Google reviews, rating, social media, and much more.

Verdict: This is the method that 90% of serious sales teams use.

Step 4: Clean and Segment the Data

You have your raw file. Now, clean it up.

Remove: - Duplicates - Contacts without email or phone - Closed businesses (0 reviews for 2 years) - Businesses that do not fit your profile

Segment: - By industry - By company size - By location - By quality indicator (number of reviews, average rating)

Recommended tool: A simple Google Sheet or Excel. Use filters and formulas to segment.

Result: You go from 5,000 "raw" contacts to 500 truly qualified prospects.

Step 5: Enrich the Data

You have the basic contacts. Enrich them.

Data to add: - Personal email of the decision-maker (if possible) - LinkedIn of the decision-maker - Direct phone number - Technologies used (WordPress, Shopify, etc.) - Financial indicators (estimated revenue)

Recommended tool: Some extraction tools do this enrichment automatically.

---

The Best Tools to Extract B2B Data from Google Maps

If you decide to go with the "automated extraction" approach, here are the main options.

IBLead: Complete Extraction with Google Reviews and Technology Detection

What it is: A pre-indexed database of 50M+ Google Maps businesses in 37 countries.

How it works: 1. You search by city, region, category, or country 2. You apply filters (rating, number of reviews, technologies, etc.) 3. You export to CSV with emails, phones, reviews, detected technologies

Included data: - Name, address, phone, email - Complete Google reviews (text, rating, date, author) — exclusive - Detected technologies (160+) — WordPress, Shopify, HubSpot, etc. - SIRET/SIREN (France only) - Google rating, number of reviews - Social media - Claimed listing or not

Pricing: - Free Plan: 200 credits — €0 - Starter Plan: 10,000 credits/month — €44/month - Pro Plan: 20,000 credits/month — €89/month - Business Plan: 40,000 credits/month — €179/month - Enterprise Plan: 100,000 credits/month — €449/month

(1 credit = 1 business exported)

Advantages: - All features included from €44/month (advanced filters, Google reviews, technology detection) - Country-wide search included from the Starter plan - Google reviews scraping — no competitor does this - Detection of 160+ technologies (WordPress, Shopify, HubSpot, Mailchimp, etc.) - Automatic SIRET matching for the French market - Cheaper than competitors on all plans

**