Verified B2B email list

ClustrMaps Widget Email List

Target decision-makers at companies with ClustrMaps Widget in their stack using deliverable, verified B2B emails for precise technographic outbound campaigns.

43,803

Verified contacts

2,112

Companies

98% accuracy guaranteed Live & fresh data Catch-all verified

ClustrMaps Widget Email List (sample 20)

Download Full List
Name & Title Company Email Status
E

Edgar Cardoze

founder

Ningedg***@ning.com✓ Verified
I

Irina Cherepanova

project manager

uCoz supporti***@ucoz.ru✓ Verified
J

Joshua Skov

Industry Mentor and Instructor

University of Oregonj***@uoregon.edu✓ Verified
M

Mark Ford

Applications Engineer Technical Sales & Service

SiteMercadom***@site123.me✓ Verified
N

Nick Mango

Co-Owner and Head of Product

Limited Runn***@limitedrun.com✓ Verified
B

Brian False

cto

PBworksbri***@pbworks.com✓ Verified
A

Abhishek Singh

I am a Composting Artist currently working

KOOP360abh***@lnk.bio✓ Verified
I

Iacopo Rovelli

member the organising team

United Kingdom Explosion Liaison Group (UKELG)ir***@ic.ac.uk✓ Verified
M

Mariusz Nowosielski

cto datacenter

Kylos Data Centeri***@kylos.pl✓ Verified
C

Catherine Wareham

administrative assistant

Swarthmore Collegecw***@swarthmore.edu✓ Verified
Å

Å��支伟 Zhiwei

lecture

Nankai Universitype***@nankai.edu.cn✓ Verified
Z

Zaiton Yusof

assistant science off

University of Malayaza***@um.edu.my✓ Verified
M

Miles Grunavld

teaching assistant

Elon Universitymgr***@elon.edu✓ Verified
S

Steven Shiau

researcher

National Center for High-performance Computingst***@nchc.org.tw✓ Verified
A

Alain Adde

director facilities materials

Ecole Polytechniqueweb***@polytechnique.fr✓ Verified
M

Marcellin Marcellin petitfrère

chanteur

2Umar***@u2.com✓ Verified
G

Gary Usher

sales manager

Metal Bladeg***@metalblade.com✓ Verified
B

Badiaa Dellal

maà tre de recherche

Ceristbd***@cerist.dz✓ Verified
A

Ahmad Ridho

lecturer

UIN Syarif Hidayatullah Jakartaahm***@uinjkt.ac.id✓ Verified
M

Marie-laure Mugnier

University Professor

LIRMMmar***@lirmm.fr✓ Verified

Showing 20 of 43,803 verified contacts

Refine to your ICP

Narrow these 43,803 contacts down to the ones that match your ideal customer profile.

Revenue range Headcount Tech stack Funding stage Hiring signals Buyer intent Job title Location Founded year
Build My Target List — Free

No credit card required.

“We turned a messy list of 8,000 accounts into 200 high-intent companies in an afternoon. Our reply rates doubled the very next week.”
MD

Marcus D.

Head of Growth

Job Title Distribution

1 (5%)
founder
1 (5%)
project manager
1 (5%)
Industry Mentor and Instructor
1 (5%)
Applications Engineer Technical Sales & Service
1 (5%)
Co-Owner and Head of Product

Live data, powered by AI

How the ClustrMaps Widget email list is built with Tomba

This isn’t a static file that quietly rots. Every technologies list is assembled live from the Tomba API and verified before it reaches you — current, deliverable, and yours to export in minutes.

  1. 1

    Target

    Pick your filters — industry, technology, job title, department, company size, country or US state. Tomba Reveal maps the exact companies that match.

  2. 2

    Discover

    Domain Search pulls the current decision-makers and their work emails from each matching company in real time — pulled live, never a recycled dump.

  3. 3

    Verify

    Every address is SMTP-checked and AI-scored the moment it is found — including catch-all (accept-all) domains most tools skip — for 99% deliverability.

  4. 4

    Export

    Download fresh, verified contacts to CSV or your CRM, or pull them straight from the REST API. Built the moment you ask, so nothing is stale.

Why Tomba is the best way to build this list

AI-powered discovery

Machine-learning models rank and match the right people at the right companies, then predict the most likely deliverable pattern.

Catch-all verification

Tomba verifies catch-all / accept-all domains that other providers mark “unknown” — so you reach leads nobody else can validate.

99% accuracy

Real-time SMTP + AI checks keep bounce rates low and protect your sender reputation and domain health.

Live & fresh

Assembled on demand from live sources — never a resold, months-old database that has already decayed.

Only pay for valid emails

If Tomba can’t find a valid email, the search is free. You never spend credits on dead or guessed addresses.

API, SDKs & MCP

A REST API with 10 official SDKs, spreadsheet add-ons, and an MCP server to build this list straight into your AI tools and workflows.

For developers and AI assistants

Build the ClustrMaps Widget list with the Tomba API

Reveal the companies, Domain Search their live contacts, Verify every email (catch-all included), and Phone Finder for direct dials. Copy-paste in Go, JavaScript, cURL, or MCP.

import { TombaClient, Reveal, Domain, Verifier, Phone } from "tomba";

const client = new TombaClient();
client.setKey("ta_xxxx").setSecret("ts_xxxx");

const reveal = new Reveal(client);
const domain = new Domain(client);
const verifier = new Verifier(client);
const phone = new Phone(client);

// 1. Reveal — find companies for the ClustrMaps Widget list
const { data } = await reveal.companiesSearch({
  query: "companies using ClustrMaps Widget",
  page: 1,
});

for (const company of data.companies) {
  // 2. Domain Search — pull live contacts + emails
  const res = await domain.domainSearch({
    domain: company.website_url,
    limit: "20",
  });

  for (const contact of res.data.emails) {
    // 3. Verifier — AI + catch-all verification (accept-all included)
    const check = await verifier.emailVerifier(contact.email);
    if (check.data.email.status !== "valid") continue;

    // 4. Phone Finder — add a direct-dial number (5 credits)
    const dial = await phone.finder({ email: contact.email });
    console.log(contact.email, contact.position, dial.data?.intl_format);
  }
}
$ npm install tomba

Verification is bundled free — Tomba scores catch-all / accept-all domains other tools skip. See the Reveal, Domain Search and Verifier docs for full options.

Transparent, pay-as-you-go pricing

What does the ClustrMaps Widget email list cost?

No per-list fees and no lock-in. You pay only for the verified contacts you export — from $8.90 per 1,000 valid emails, with AI and catch-all verification included.

$8.90/ 1,000 verified emails

Pay-as-you-go credits — 1 credit per valid email found via Domain Search or Email Finder. Buy only what you need.

FreeAI + catch-all verification

Every email is verified — including catch-all domains — at no extra credit cost. Verification is bundled, not billed.

$0for invalid results

If Tomba can’t find a valid email, the search is free. Duplicate lookups in the same month are free too.

Start free — 25 searches & 50 verifications, no card required.

Credits scale from 5,000 to 2,000,000 / month and stay valid for 12 months. REST API, 10 SDKs, and MCP included on every plan.

FAQ

Frequently asked questions

Freshness, catch-all verification, coverage and cost — answered.