--- title: "List Building Services for B2B Tech Companies | Frontal" description: "List building services for B2B tech: we turn your ideal customer criteria into verified account and contact lists in Clay and write them into your CRM." url: https://frontal.so/services/gtm-engineering/list-building updated: 2026-11-09 --- # B2B list building services for tech companies ## Lists of the buyers you want to reach Frontal provides list building services for B2B tech companies with a sales team. We turn your ideal customer criteria into account and contact lists in Clay, verify every email address and write the lists into HubSpot or Salesforce for outreach. [Book a call](https://book.frontal.so) Illustrative workflow - [Worked with **300+ companies**](https://frontal.so/case-studies) - [Read the Aircall case study](https://frontal.so/case-studies/aircall) - [Read the AirOps case study](https://frontal.so/case-studies/airops) > They’re great at coming up with ideas that just work, and the execution velocity is high enough that we see all of them through. That generates results for us. $7.83M qualified pipeline in 10 months **Eoin Clancy** VP Growth, AirOps Read the AirOps case study - [Read the Teikametrics case study](https://frontal.so/case-studies/teikametrics) > I wanted the outcome of a BDR team, but more efficient and effective. $300K+ pipeline in 9 months **Ben Rey** Former Chief Revenue Officer, Teikametrics Read the Teikametrics case study - [Read the Design Pickle case study](https://frontal.so/case-studies/design-pickle) - [Read the Playbook case study](https://frontal.so/case-studies/playbook) > The Frontal team is everything you’d want in a consulting partner: true experts with both strategic insight and hands-on execution. 20 opportunities in the first 20 days **Dr. Nikolai Wessendorf** Founder and CEO, Playbook Read the Playbook case study Who it is for ## Your lists take weeks to build, and still miss the buyers For B2B tech companies from Series A onward with a sales team, whose prospect list building is done by hand from one data source, or bought from a vendor and never checked. 1. ### Weeks per list Someone builds each list by hand, and the outreach waits until it is done. 2. ### The same lists as everyone Lists pulled from the same few databases reach the same contacts your competitors reach. 3. ### Contacts that bounce Unverified addresses bounce, and every bounce makes the next email less likely to arrive. What you get ## Lists your outreach can run on, built and kept in your tools We build the lists in Clay, write them into your CRM and document how each one was built, so your team can rebuild or extend it. 1. ### Account lists The companies that fit your ideal customer criteria, with company size, industry, tech stack and hiring data, ranked by fit. 2. ### Contact lists The people involved in each purchase at those accounts, with work emails verified before they reach your CRM or a sequence. 3. ### Lists that keep up New accounts and contacts are enriched as they enter your CRM, so the next campaign starts from current data. How it works ## How our list building services work 1. ### Write down the criteria We turn what your sales team knows about good customers into criteria a list can be built from. 2. ### Choose the sources We pick the data sources that cover your market, beyond the contact databases every team uses. 3. ### Build and enrich in Clay We build the account and contact lists in Clay and fill in the fields your outreach needs. 4. ### Verify and check the CRM We verify every email address and check each contact against your CRM, so customers and open deals stay out of the list. 5. ### Hand over or run outreach Your team works the lists, or we run the outreach on them with you. About 40 Booked calls, at last tally - Before: about 20 manual messages a day, at best - Bounce rate in one campaign: under 1% [Read the case study, Seller Candy](https://frontal.so/case-studies/seller-candy) Seller Candy ## About 40 booked calls for Seller Candy, from lists that used to take weeks to build by hand Seller Candy knew who it wanted to reach, but its lists of agencies and larger Amazon sellers were built by hand over weeks and worked one message at a time, about 20 a day at best. We turned its ideal customer criteria into lists, ran sellers and agencies as separate campaigns, found the right person inside each agency and tested every email three ways. In one campaign the bounce rate stayed under 1% on every version, and the program reached about 40 booked calls. **What changed** Some of the agencies the campaigns reached became partners, with lead sharing and referrals both ways. **What we handled** Lists from Seller Candy’s ideal customer criteria, separate seller and agency campaigns, three versions of every email and clean sending. Tools ## The tools we work in We start with the tools you have and suggest a change only when it fixes a real problem. - [Clay](https://go.frontal.so/clay) - [Apollo](https://go.frontal.so/apollo) - LinkedIn - HubSpot - Salesforce We’re one of six Clay Elite Studio Partners, a HubSpot Solutions Partner and a Salesforce Partner. Your options ## Four ways to get the work done Each option suits a different team. The last row says when each one is the better choice. | Compared on | Frontal | In-house hire | Freelancer | List broker | | --- | --- | --- | --- | --- | | Who does the work | Our GTM engineers build the lists in Clay from your criteria and write them into your CRM. | An SDR or ops hire who builds each list by hand. | A freelance researcher who builds a list to order. | A vendor selling contact lists from its own database. | | How fast it starts | First week: kickoff and access. Month one: audit and setup. Months two and three: launch and improve. | Once the role is hired and onboarded. | As soon as you find one and agree the scope. | As soon as you buy the list. | | What you keep afterwards | Every list and the table that built it, in your accounts and documented. | What they build, and their know-how while they stay. | The finished list, as a file. | The records you bought, under the vendor’s license terms. | | How it’s paid for | A fee agreed in a statement of work, starting with a three-month engagement. | A salary and benefits, plus the cost of hiring. | By the hour, the day or the project. | A price per record or per list. | | Best when | You want lists built from your own criteria, verified and kept current in your CRM. | You build new lists every week and want the skill on your team. | You need one list researched by hand, and your team takes it from there. | One database covers your market, and your team can check and load the data. | The team ## Who does the work With Frontal, you get experienced people who build and run the work, using software and AI where they help. - ### Kenny Damian Co-founder & Head of GTM Kenny leads GTM at Frontal, working on outbound, account research and sales operations. How to start ## Start with a three-month engagement We start with a three-month engagement. The scope, milestones and owners are written into a statement of work before anything starts, and ongoing terms are agreed before work begins. 1. First week ### Kickoff and access We hold the kickoff call, get access to your CRM and Clay, and agree the market and the criteria for the first list. What you do One kickoff call, and access to your CRM and tools. 2. First month ### Audit and setup We review the lists and data you have, choose the sources, and build the first list in Clay on a sample. What you do Check the sample against what your sales team knows. 3. First three months ### Launch and improve In month two we build the full lists, verify every address and write them into your CRM. In month three we review with your sales team which lists brought replies and build the next ones. What you do Approve each list before it is used. Ongoing ## Talk with an operator Bring your current setup, and we’ll walk you through how the first three months would look for your team. [Book a call](https://book.frontal.so) ## What it costs The price depends on scope, channels and volume. We agree it in a statement of work before we start. ## What buyers ask **What is a B2B list?** A B2B list is a set of companies, and the people at them, that fit who you sell to. An account list names the companies; a contact list names the buyers at each one, with verified work emails. Good lists start from your own ideal customer criteria, not from what one database happens to hold. **What is a B2B email list?** It is a contact list with a verified work email for each buyer, ready for outreach. We verify every address before it reaches your CRM or a sequence, because unverified addresses bounce and hurt every email after them. **How much does it cost to build an email list?** It depends on the size of your market and the data sources it needs. We agree our fee in a statement of work before we start, and the data tools, such as Clay, bill their plans to you, separately from our fee. **How are list building companies different from data providers?** A data provider sells records from its own database. List building companies like Frontal combine several sources, check the results against your criteria and your CRM, and build each list for the campaign you plan to run. **Can you build lists from sources other than contact databases?** Yes, and some of the best lists come from places other teams don’t look, such as job posts, event attendee lists or the data inside your own product. We get the data out, cut it down to the buyers who fit and enrich it in Clay. **Who owns the lists?** You do: every list and the Clay table that built it live in your accounts, documented so your team can rebuild or extend them. **Do you run outreach on the lists too?** Yes, if you want us to. As a list building company we can hand the lists to your team, or run email and LinkedIn outreach on them under your team’s names. ## Let’s grow your pipeline together Tell us what you’re trying to hit this quarter, and we’ll suggest where to start. [Book a call](https://book.frontal.so)