Custom B2B List Building Service

We build the lists.
You close the deals.

Boost your outreach with a hand-researched, 100% custom B2B prospect list built around your exact ideal customer profile — verified to a 99.99% accuracy rate and delivered ready to use. Your perfect prospects are one click away.

99.99% accuracy rate
15+ manual researchers
GDPR & CCPA compliant
600+
Projects Completed
99.99%
Accuracy Rate
B2B Prospect List CEO Verified CTO Verified VP Verified DIR Verified 99.99% verified • 600+ lists delivered List Ready 100% Verified
600+
Projects
Completed
7+
Years of
Experience
15+
Manual Data
Researchers
99.99%
Email
Accuracy Rate
Why It Matters

Skip the Gatekeepers.
Reach the Decision-Makers.

Decision-makers control budgets and approve purchases — so reaching them directly shortens your sales cycle, increases reply rates, and gets you closer to closed deals faster. Our B2B prospect lists put you in front of the exact people who have the authority to say yes.

Forget wasting hours on cold research that leads nowhere. We hand-build every list around your specific ICP, verify every contact, and deliver it ready to use in your outreach tool of choice.

Decision-makers we target for you

Chief Executive Officer (CEO)
Chief Operating Officer (COO)
Chief Financial Officer (CFO)
Chief Technology Officer (CTO)
Chief Marketing Officer (CMO)
Vice President (VP)
Director
Head of Department
General Manager
Founder / Co-Founder
Business Owner
Authorized Decision Leader
Why ProspectOut

What Makes Our Lists Different
From a Database Subscription

Database tools give you generic, often outdated contacts. We build every list by hand, specifically for your ICP, and verify every address before delivery.

Manually Researched

Every contact is individually verified by our team of 15+ manual data researchers — not scraped and bulk-exported from a database. You get clean, relevant contacts that actually fit your ICP.

99.99% Accuracy

We run a dual-layer email verification process using NeverBounce, ZeroBounce, and MillionVerifier. Every address is validated before delivery so your emails don’t bounce.

100% Custom-Built

No recycled data. Every list is built fresh to your exact specifications — industry, location, company size, revenue, job title, tech stack, and more. If it matters to your ICP, we research it.

GDPR & CCPA Compliant

All data is sourced ethically from publicly available information. We follow GDPR and CCPA regulations throughout our research process so your outreach stays legally safe.

Fast Turnaround

We move quickly without cutting corners. Share your ICP and criteria, and we’ll deliver a verified, ready-to-use prospect list on an agreed timeline — no waiting weeks for stale data.

Ready to Use

Lists are delivered in a clean, structured format ready to import into any outreach tool — Instantly.ai, Apollo, HubSpot, Salesforce, or a simple CSV. No cleanup work required on your end.

Who It’s For

Who Uses Our B2B
List Building Service

Our service is built for teams that rely on targeted outreach and accurate contact data to fill their pipeline and drive consistent revenue.

Cold Email & Outreach Agencies

We supply outreach agencies with the clean, targeted lists they need to run high-performance cold email campaigns for their clients — so they can focus on strategy, not data collection.

B2B SaaS Companies

We help SaaS companies connect with decision-makers who evaluate and approve software purchases — reducing trial-and-error outreach and increasing qualified demo bookings.

Recruitment Agencies

We build lists of hiring managers, HR directors, and business leaders so recruitment agencies can reach the people who actually make hiring decisions — fast.

IT & Software Service Providers

We connect IT firms with technology leaders and business owners who need managed services, cybersecurity, or infrastructure support — pre-qualified by company size and tech stack.

Sales Teams

Give your sales reps ready-to-use, decision-maker-focused lists that cut research time in half, improve response rates, and create more meaningful first conversations.

Consulting Firms

Consultants can reach department heads and C-suite executives who need strategic guidance, operational improvement, or transformation services — without sifting through irrelevant contacts.

Financial & Insurance Services

We help financial advisors, brokers, and insurance professionals reach business owners and CFOs who make financial decisions — without wasting time on unqualified contacts.

Startups

Early-stage startups gain fast access to verified ideal prospects, helping them build pipeline traction, validate their offers, and grow outbound sales without a large in-house team.

Our Process

How We Build Your
Perfect B2B Prospect List

A clean, four-step process from brief to delivery — transparent, fast, and built entirely around your ideal customer.

01
Step One

Understand Your Ideal Customer Profile

We start by getting under the skin of your ideal customer. What industries do they operate in? What job titles hold the budget? What company size, revenue range, or geographic market are you targeting? We ask the right questions upfront so every contact we deliver is genuinely relevant to your offer.

02
Step Two

Data Research & Manual Collection

Our researchers get to work using LinkedIn Sales Navigator, Apollo, ZoomInfo, Google Maps, and targeted Google searches. Unlike database tools, every contact is individually reviewed to confirm role accuracy, activity status, and company legitimacy. For businesses with limited web presence, we use advanced manual research techniques to track down the right information.

03
Step Three

Email Verification & Accuracy Assurance

Every email address goes through a dual-layer verification process using NeverBounce, ZeroBounce, and MillionVerifier. Data points are cross-verified to ensure we hit our 99.99% accuracy target. Invalid, risky, or catch-all addresses are removed before delivery. You get only clean, deliverable contacts.

04
Final Step

Delivery of Your Targeted Prospect List

Once verified, your list is packaged in a clean, structured format ready to import directly into your outreach tool — Instantly.ai, Apollo, HubSpot, Salesforce, or a simple CSV. We include all agreed data fields with zero fluff, zero incomplete records, and zero surprises.

Tools & Resources

The Tools We Use to Find
Your Best Prospects

We combine premium research platforms with hands-on manual verification — so your list is current, accurate, and genuinely useful.

LinkedIn Sales Navigator
The gold standard for B2B prospecting. We use advanced filters to identify decision-makers by title, company size, industry, and location — then individually review each profile for accuracy.
Apollo.io
Apollo gives us access to a rich database of B2B contacts with detailed firmographic data. We use it for bulk discovery and then cross-verify every contact manually.
ZoomInfo
ZoomInfo supplements our research with detailed company and contact data, funding information, and tech stack insights — enriching every list with verified, comprehensive detail.
Google Maps
We use Google Maps to verify business locations and gather local business data, especially useful for targeting region-specific campaigns or local decision-makers.
Online Directories
Industry-specific directories and business listings provide additional data points that bulk databases miss — helping us build more complete and accurate profiles.
NeverBounce, ZeroBounce & MillionVerifier
Our triple-layer email validation stack. Every address runs through all three tools to achieve our 99.99% deliverability guarantee before any list leaves our hands.
What You Get

Every Data Field You Need
to Start Outreach Immediately

Each prospect list includes these fields as standard — fully verified, cleanly formatted, and ready to import.

Business Name
Website
Address
Company Phone
Company Size
Company Revenue
Contact Name
Job Title
Direct Email Address
Direct Phone Number
LinkedIn Profile
Industry
Data Compliance

Ethically Sourced, Fully Compliant
GDPR & CCPA Data

We prioritise ethical, secure data collection. Every list we build meets GDPR and CCPA requirements — protecting your brand and your prospects.

GDPR Compliant
General Data Protection Regulation

We strictly follow GDPR rules, collecting only publicly available business information. Our process ensures transparency, consent where required, and secure handling of all professional data for EU residents.

  • Only publicly available business data collected
  • Full transparency & secure data handling
  • Data removal requests honoured promptly
  • Regularly audited for ongoing compliance
CCPA Compliant
California Consumer Privacy Act

Our process complies with CCPA, protecting California residents’ personal information. We maintain transparency, provide opt-out options, and ensure ethical, secure use of all collected business data.

  • Encrypted storage for all collected data
  • No restricted or private personal data sourced
  • Opt-out options available for all contacts
  • Strict internal handling protocols enforced
Flexible Pricing Tailored to Your Needs
Our pricing is based on list size, data complexity, and turnaround time. Tell us what you need and we’ll send a custom quote within 24 hours — no surprises, no lock-ins.
FAQ

Frequently Asked Questions About
B2B List Building

B2B prospect list building is the process of identifying and compiling a list of potential customers who match your ideal customer profile (ICP). Think of it as creating a curated group of people most likely to be interested in your product or service. A good list includes verified contact details so your sales and marketing teams can reach out directly — without wasting time chasing the wrong people.

Database tools give you access to pre-existing data that may be outdated, incomplete, or inaccurate. We build every list from scratch, manually, specifically for your ICP. Our researchers review each contact individually, verify every email address, and deliver data that’s current and genuinely relevant. No recycled exports, no stale contacts.

We target a 99.99% accuracy rate on all email addresses. Every list goes through a dual-layer verification process using NeverBounce, ZeroBounce, and MillionVerifier before delivery. Invalid, risky, or catch-all addresses are removed. If you experience significant bounce rates, we’ll investigate and replace affected contacts.

Yes. We offer a small preliminary sample list to help you assess the quality and relevance of our work before committing to a full order. Just reach out and let us know your criteria — we’ll prepare a sample tailored to your ICP.

Yes to both. LinkedIn Sales Navigator is our primary tool for identifying B2B decision-makers. We also use Google Maps to source local business data including ratings, reviews, contact information, and location details — useful for region-specific or local outreach campaigns.

Yes. We collect only publicly available business information and follow both GDPR and CCPA regulations throughout our research process. All data is securely stored, and we honour data removal requests. Our lists are built for professional B2B outreach — not personal data harvesting.

Absolutely. We build every list around your exact specifications — industry, job title, company size, revenue range, location, tech stack, funding stage, and more. The more specific your ICP, the more targeted and effective your list will be. Share your criteria and we’ll handle the rest.

We deliver lists in CSV or Excel format by default, which can be imported directly into any outreach tool — Instantly.ai, Apollo, HubSpot, Salesforce, or your CRM of choice. If you need a specific format or field mapping, just let us know and we’ll accommodate it.

Ready to Get Started?

Stop Researching.
Start Outreaching.

Tell us who you’re trying to reach and we’ll build you a hand-verified prospect list that’s ready to use in days. No contracts, no fluff — just accurate data that drives results.

99.99% accuracy
GDPR & CCPA compliant
15+ manual researchers