FullCircl vs Tomba: B2B Data and Email Finder Compared

FullCircl vs Tomba is not really a head-to-head fight. One tool picks the accounts. The other finds the email address. Here is where each one wins, and when you need both.

TL;DR

• They are not the same category. FullCircl is a customer intelligence and onboarding platform built on UK and Ireland company records. Tomba is a global email finder and verifier.
• FullCircl wins on company data and compliance. Filings, credit signals, group structures, KYB/AML checks, and trigger events. Mostly UK and Ireland.
• Tomba wins on contact data and cost. Email discovery, verification, catch-all handling, and an API. Plans start at $49/mo, and there is a free tier for testing.

Pricing is the other split, and it decides a lot of deals:

• Tomba publishes every tier. FullCircl is quote-only. Expect an annual contract and a sales call before you see a number.
• Most buyers keep both tools. One for targeting, one for outreach. If you can fund only one, ask whether your real bottleneck is account selection or contactability.

What is FullCircl, and who actually buys it?#

FullCircl is a B2B customer intelligence platform. It came out of the 2021 merger of Artesian Solutions and DueDil. It later added W2 Global Data for identity and compliance checks. The pitch is "Customer Lifecycle Intelligence": one dataset to find, qualify, onboard, and monitor business customers.

The core data is company-level. You get registry filings, financials, directors and shareholders, group structures, credit signals, and news-based trigger events. The backbone is Companies House and similar registries. So coverage is deepest in the UK and Ireland, and it thins out fast beyond that.

Who buys it:

• Commercial insurance brokers using SmartBroker to spot renewal windows and risk changes
• Banks, lenders, and fintechs running KYB and AML onboarding checks in one place
• Enterprise sales teams in regulated UK markets who need company truth, not contact volume
• RevOps teams pushing enriched company records into Salesforce or Dynamics

What FullCircl is not: a cold outreach contact database. It will tell you that a 40-person logistics firm in Leeds just filed 30% growth and appointed a new director. It will not hand you that director's work email before Thursday.

What is Tomba, and what does it actually do?#

Tomba is an email finder and verification platform. Give it a name and a domain, or just a domain. It returns work email addresses with a confidence score and the public sources behind them.

The product surface:

1. Email Finder — name + domain in, verified work email out, with pattern detection per company
2. Domain search — pull every address at a company, grouped by department and seniority
3. Email verifier — SMTP, syntax, MX, disposable, and role-account checks before you send
4. Catch-all handling — a dedicated verifier for domains that accept everything and tell you nothing
5. Data enrichment and phone lookup — job title, company, social profiles, and B2B phone numbers
6. Developer tooling — a documented email finder API, CLI, Chrome extension, Sheets and Excel add-ins

Coverage is global, not registry-bound. Tomba is built for the step after you decide which accounts matter. It turns a list of companies and people into addresses that will not wreck your sender reputation.

FullCircl vs Tomba: how do they compare head-to-head?#

The table makes the answer obvious. These tools barely overlap. The one shared area is enrichment. Both can append company attributes to a record, and that is where buyers get confused.

Which one gives you better data coverage?#

It depends on the axis you mean. Break it into four.

Company breadth in the UK and Ireland. FullCircl wins outright. Registry records include entities that scraped contact databases miss: dormant subsidiaries, holding companies, and new firms with no website yet.

Company breadth everywhere else. Tomba gets more useful the further you move from the UK. FullCircl's non-UK data exists, but it is not why anyone buys the platform. If your ICP is US SaaS or DACH manufacturing, registry depth in Cardiff does not help.

Person-level contact data. Tomba wins. FullCircl surfaces directors and officers from filings, which helps with top-of-house targeting. But a name on a filing is not an email address. You still need a finder to close the gap.

Deliverability signal. Tomba wins by default, because FullCircl does not verify email addresses. Anything you pull from a filing still needs an email verification pass before it hits a sequence.

Run a simple test. Take 25 target accounts you actually want. Push them through both tools. Count how many produce a solid reason to reach out, then count how many produce a mailbox that accepts mail. FullCircl usually wins the first column. Tomba usually wins the second. Miss either one and the campaign does not run.

How does pricing compare?#

This is the sharpest difference in the FullCircl vs Tomba decision. It settles most evaluations under $50k of annual tooling budget.

FullCircl does not publish rates. That is normal for compliance software. The price depends on modules (SmartBroker, Engage, W2 checks), seat count, and check volume. Expect a discovery call, a scoping exercise, and an annual number. That is fine if you are a lender who needs KYB anyway. It is friction if you are a five-person agency who wants to test 500 emails this week.

Tomba's pricing sits at the other end. Every tier is on the page. The free tier is real. You can cancel without a renewal conversation. For a team checking whether a data spend pays back at all, that gap in commitment is often the whole decision.

Is FullCircl better than Tomba for outbound?#

For pure outbound prospecting, no. FullCircl would not claim otherwise. Its strength is telling you when and why to approach an account: a funding event, a new director, a filing that hints at growth, a risk flag that adds urgency. That is trigger-based selling, and it works well in insurance and lending.

An outbound motion needs three things, in order:

• A reason — FullCircl is excellent here for UK and Ireland accounts
• A person — both tools help; FullCircl gives officers, Tomba gives operational roles like Head of Marketing or VP Engineering
• A working address — Tomba only

Say your bottleneck is "we have 4,000 accounts and no idea which 200 to call." Then FullCircl earns its contract. Say it is "we know exactly who to call and 34% of our emails bounce." Then FullCircl solves nothing and Tomba solves everything.

One more note for buyers shopping broadly. Many teams shortlist FullCircl next to ZoomInfo or Cognism, and shortlist Tomba next to dedicated finders. Check G2's category listings first. Two tools on the same shortlist are often not substitutes.

What are the honest downsides of each?#

FullCircl's weak spots

• Coverage collapses outside the UK and Ireland — a hard stop for global ICPs
• No public pricing, so budget approval takes longer than the evaluation
• Setup and CRM mapping is a project, not an afternoon
• No email verification, so contact data still needs a second vendor
• Overkill if you are not in a regulated or risk-sensitive vertical

Tomba's weak spots

• No KYB, AML, or sanctions screening. If compliance is your use case, that rules it out
• No registry-grade financials, filings, or group structure data
• No trigger-event monitoring or "why now" signal out of the box
• The free tier at 25 searches/mo is for testing, not production
• You still need a sending tool. Tomba finds and verifies, it does not send

Neither list is a dealbreaker on its own. Each one is a dealbreaker against a specific job. Write down your job first.

Can you use FullCircl and Tomba together?#

Yes. For UK teams in regulated markets, it is the strongest setup. The workflow looks like this:

1. Segment in FullCircl. Build target lists from firmographics and trigger events, such as growth filings, new directors, or a headcount threshold.
2. Push accounts to your CRM. FullCircl connects natively to Salesforce and Dynamics. Keep the company record as the source of truth.
3. Resolve contacts with Tomba. Run domain search or bulk lookups to get the operational buyers that filings never mention.
4. Verify before sending. Check every address, catch-all domains included, so bounces stay under 2% and your sender reputation holds.
5. Sync back. Use the Tomba API or the HubSpot integration to write verified contacts onto the account record.

That stack costs less than it looks, because Tomba starts at $49/mo. The trap is buying two enterprise contracts that both promise "complete B2B data" when neither one verifies an inbox.

FullCircl vs Tomba: which should you choose?#

Choose FullCircl if you sell into UK or Irish businesses and need KYB/AML onboarding in the same platform. It fits insurance, banking, and lending teams whose buyers already expect an annual contract. The compliance and filings depth is the product. Pay for that, not for prospecting.

Choose Tomba if your bottleneck is reaching people rather than choosing accounts. It fits a multi-country ICP, a team that wants to test data quality before committing budget, and engineers who want an API and CLI wired up this week.

Choose both if you are a UK outbound team with real budget. FullCircl covers the "why now." Tomba covers the "how do I reach them." Read the FullCircl site for current module details. The platform has changed shape more than once since the Artesian/DueDil merger, and vendor docs beat third-party summaries on anything contractual. For contact strategy basics, HubSpot's sales resources are a decent neutral baseline.

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Ready to fix the contactability half of the problem? Start with the Tomba Email Finder. The free tier gives you 25 searches a month with no card, so you can run your real target list before you spend anything. If it works, Starter is $49/mo with verification, domain search, and full API access. Find the person, verify the mailbox, then let your intelligence platform tell you when to hit send.

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