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(888) 875-0799
Our custom list building services deliver verified, ICP-matched contacts to your reps so they can work right away. We start by finding your target companies, then confirm who the real decision-makers are, and check every email and direct dial before anything reaches you. That means no recycled data, no bounces, and no reps stuck scrubbing spreadsheets. What you end up with is a clean, CRM-ready B2B contact list, built around your exact ICP and ready to go from day one.
Free sample within 48 hours and review real data before paying anything.
We replace any record that does not work at no extra cost to you.
Pay only for verified contacts with no annual lock-in or any large upfront contract.
Trusted By
2100+ Businesses
Compiles verified contact data that matches your ICP. This is the raw material.
Runs outreach that turns those contacts into booked meetings and pipeline.
Effective outreach depends on quality data. We build the verified list for you, and our B2B lead generation and B2B appointment setting team can handle the outreach too. Either way, you need a clean list building service first.
B2B contact data goes stale fast, 2 to 3% a month. Bounces build up quickly and drag down your sender reputation.
Most data platform licenses run $15K to $50K a year, and you still filter, clean, and check the data yourself, not a finished list.
Bad data and manual research eat up close to 27% of selling time. Reps could spend that time on calls and deals instead.
Contact accuracy of list providers is only 50%. So half half of them misses real inboxes. List providers average only 50% accuracy, so half may miss real inboxes. Weak firmographics hurt data quality in b2b list building.
A clean, deduplicated, and ICP-matched list, not a raw database export. We check every required field before delivery, giving your team a file that is ready to import and use.
Syntax, domain, and mailbox checks help reduce bounces and protect your sender reputation, which is the core of our email list building services.
Reach decision-makers through confirmed direct lines and mobile numbers instead of general switchboards.
Each record includes company size, revenue, location, and confirmed decision-maker titles.
Choose the extra data your campaign needs, from tech stack and funding stage to buying intent.
We use waterfall enrichment. This means we check many sources one by one until every field is filled in. Then comes active inbox validation, not just a simple syntax check. This is what makes the difference between records that look right and records that actually work.
Bad or generic role-based addresses get caught before anything else moves forward.
This confirms the mail server exists and can receive mail at that domain.
This checks that the mailbox works and flags catch-all domains before we send anything.
Phone numbers get checked to make sure they reach the right contact, not a dead line or a front desk.
A researcher confirms the title, the company, and that the person still works there.
Duplicates get removed, and the list gets checked against your do-not-contact and existing-customer lists.
ZoomInfo
Lusha
Apollo
Seamless.AI
Clay
Hunter
RocketReach
ZeroBounce
LinkedIn Sales Navigator
Public and proprietary records
We don’t do any guesswork. Our clear 5-step list-building process turns your ideal customer profile into buyer-ready data.
We sit down with you and map your ideal industry, company size, location, and decision-maker roles.
Our researchers find companies that fit, filtered by industry, size, location, revenue, tech stack, and signals.
Track down real decision-makers, then verify their emails, direct dials, and LinkedIn profiles closely.
Remove duplicates, scrub suppression lists, segment by role and industry, then format the file.
You get a verified, segmented list in your format, or pushed straight into your CRM.
We build every type of contact list your sales team needs. Our B2B list building services cover email, phone, LinkedIn, target-account, and intent-based lists.
A complete view of each account, mapping decision-makers, influencers, and other stakeholders involved in the purchase.
List Enrichment
Ongoing Refresh
Each year, 25 to 30% of B2B contact data goes bad as people switch jobs. Our team checks and updates your list on a regular schedule, so your CRM stays current between campaigns.
There are four ways to build a prospect list. Unlike most list building companies, we verify every record by hand. Here is how they compare on what actually drives your cost per meeting.
CallingAgency List Building | ZoomInfo / Apollo License (B2B list builder) | In-House or VA | Bought Static List | |
|---|---|---|---|---|
Cost Model | Pay only for verified contacts | $15K to $50K a year | Salary plus tool expenses | Low cost upfront, costly in bounces |
Data Freshness | Checked right before delivery | Depends on the source | Only as good as the researcher | Outdated the moment you buy it |
Human Verification | Yes, on every record | No | Depends | No |
Built to Your ICP | Yes, fully custom | You do the filtering | Yes | Generic, not tailored |
Time to First List | Sample in 24 hours, full list in days | Instant, once you learn the tool | Weeks | Instant |
Suppression Scrubbing | Included | Done manually | Done manually | None |
Who Does the Work | Our research team | Your own team | Your own team | No one |
Contract Lock-In | None | Yearly contract | Ongoing staff costs | None |
Our list building services are priced per verified contact, not a yearly platform license. It is simple, flexible, and built to grow with your campaigns.
Salesforce
HubSpot
Pipederive
Apollo
Instantly
Smartleade
Strong outreach starts with strong data. Here are the teams that lean on our b2b list building services.
Reps get verified decision-makers, so they book more meetings and spend less time on manual research.
Clean, segmented lists boost engagement and conversion across every campaign.
Targeted prospect lists keep client acquisition steady and easy to repeat.
Custom-built lists drive targeted outreach and quicker, cleaner growth.
Accurate lists of hiring managers and decision-makers expand your candidate and client pipelines.
Complete buying-committee maps at each named account fuel personalized, multithreaded plays.
Case Study
Name withheld under NDA. This client is a payroll and benefits software company selling to mid-size companies across the Midwest. Their SDR team ran on a database export bought two years ago, and half the emails bounced before a rep ever got a reply. Below is what changed once we built their prospect list from scratch.
Turnaround time
Dropped from 31% on their old list to under 2% on the new one.
Estimated pipeline built from meetings sourced from the new list.
Before · The problem
An old list, going stale by the day.
After · The result
A list built around real buyers.
We mapped their ICP by company size, industry, and HR buying authority. We then built the list from scratch and verified every email and title by hand. Bounce rates dropped under 2%, and reps got their research time back to spend on calls instead.
“
Cal J. Lewellyn
– Analyst / Advisor / Broker
★★★★★
We have spent years building the kind of data outbound campaigns depend on. You can see that in every record we send over.
Tell us your ICP and we will build a custom list building services quote, plus a free sample so you can check the data before you commit.
A list-building service builds you a verified list of the right companies and contacts, so your sales and marketing team can reach out to real prospects instead of guessing. List building is different from buying a list because a bought list is static, and someone already built it and sold it to multiple companies like yours. But a list-building service builds a fresh and qualified list just for you.
We build B2B contact lists for sales and SDR teams, outbound marketers, RevOps, agencies, founders, ABM teams, recruiters, and more. We build lead lists for different companies across industries, for whoever needs them. Just tell us who you sell to, and we build the list around that profile.
Every record is verified against syntax, domain, and mailbox checks, plus a human cross-check on LinkedIn, so bounce rates stay low. If a record still turns out wrong, we replace it at no additional cost. You will not pay for data that does not work.
List building is identifying and verifying raw contacts to contact the potential customer. Lead generation is outreaching those prospects for booking appointments and making sales. So we build the list first, then if you want, we can also generate leads and set appointments for you through our strategic multichannel outreach. But a clean and quality lead list comes first either way.
Yes, we offer a custom list-building service, which is a core service of what we do. We qualify each lead by their industry, company size, annual revenue, location, technology stack, decision-maker's role, seniority, and intent signals. Then we build the list according to your exact ideal customer profile. Every contact is chosen to match the buyers you can actually close.
Records of our list building services include the fields of verified business email, verified direct dial or mobile numbers, designation, company name and size, annual revenue, location, and the URL of the LinkedIn account. We can add more custom fields as well, according to the client's requirements. You just need to notify us which kind of field you need, and we will add it.
We check each email and phone number step by step with waterfall enrichment. First, we look at many sources until we fill in every field. Then, we run a real inbox check to make sure it works. We check emails for the right spelling, the right domain, and a live mailbox, and we flag any shared inbox. And phone numbers get checked to make sure they reach the actual person, not the front desk. Last, a real researcher checks LinkedIn to confirm the person still has that job.
Yes. Send us a CSV, a CRM export, or an old event list. We match every record, append missing emails, direct dials, titles, and firmographics, remove duplicates and dead records, and re-verify against active inbox checks before it goes into a sequence. We can also refresh your database on a set cadence so it does not go stale.
Yes, our list data is GDPR, CCPA, CAN-SPAM, and CASL compliant because we source those contact details from providers with transparent collection practices. Then we clean every contact data following the DNC list, the constantly updated litigator list, and your own suppression list. Every list is built strictly maintaining GDPR, CCPA, CAN-SPAM, CASL for Canada, and HIPAA-aware for healthcare. So, whatever industry you are in, we follow that particular data collection regulation.
Our list building services are priced on a pay-per-verified-contact model, not a yearly platform license. We don't charge for unfit or unusable data, and you only pay for records that pass our verification process. We don't mention an exact price because it drops as your list size increases, with no minimums that force you to over-buy. It is month to month, with no annual contract lock-in. Send us your target market and ICP, and we will quote your list.
We deliver you a verified list within the first 7 days, and you can get a sample within the first 48 hours once we get started. Our lists are delivered in clean CSV format and also pushed straight to your CRM systems such as Salesforce, HubSpot, and Pipedrive. So your SDR team can start working by taking contact from one source, which speeds up the outreach process.
You get a sample within 48 hours of the campaign start, and your full verified list within 7 days. We deliver in clean CSV or push the detailed information straight into your CRM, including Salesforce, HubSpot, and Pipedrive. Your SDR team works from one source, so outreach starts sooner.
Both, plus LinkedIn and target-account lists. Our email list building services deliver real, checked business emails, and we flag any that might bounce. Our phone lists have verified direct numbers and mobiles. Our LinkedIn lists match the same people you are trying to reach. Most teams like to get all three, so each rep can reach a contact more than one way.