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// verified b2b email list

RoundCube Email List

Connect with organizations powered by RoundCube using verified, up-to-date B2B email addresses, perfect for technographic-based lead generation and outreach.

verified contacts
47,571
companies
2,316
Syntax, MX and SMTP checked Catch-all detection Credit back for confirmed hard bounces

RoundCube Email List (sample 20)

Download the full list
Name and title Email
P

Paris Scott

Digital Marketing Specialist

Pinterest

ps***@pinterest.com
G

Gandi Role

ceo

Gandi

reg***@gandi.net
J

Jon Christopherson

Seasoned IT Professional and Entrepreneur

cPanel

j***@cpanel.net
A

Adrien Cunin

ingà nieur cloud computing

Canonical

ad***@ubuntu.com
Z

Zoya Beloborodova

program manager

Plesk

zbe***@plesk.com
J

Jay Wang

director engineering

Network Solutions (Web.com)

j***@networksolutions.com
D

Daniel Pitts

Principal Software Engineer

CNET (Red Ventures)

dan***@cnet.com
C

Christopher Aker

founder ceo

Linode (Akamai)

c***@linode.com
T

Tessa Hollander

HR Manager

Your Hosting

tes***@yourhosting.nl
A

Andreas Flemsjì¦

marketing manager

Loopia

and***@loopia.se
T

Tyler Oakleaf

Software Architect

KAYAK

to***@kayak.com
J

Jamie Cameron

Site Reliability Engineer

Virtualmin

jc***@virtualmin.com
A

Angela Molina

production manager

SitePoint

ang***@sitepoint.com
M

Michael Hierweck

vorstand bei hostsharing eg â geschà ftsführer

Hostsharing

mic***@hostsharing.net
R

Robin Johnson

ceph radosgw developer sysadmin

Gentoo

ro***@gentoo.org
C

Clint Page

ceo

Dotster

c***@dotster.com
P

Peter Christianen

director education mathematics physics astronomy

Radboud University

pet***@ru.nl
J

Jeroen Bouten

directeur

Flexwebhosting

je***@flexwebhosting.nl
L

Lebbat Driss

co founder and chief executive officer

ADK Media

d***@adk-media.com
H

Hueseyn Hueseynzad

Regional Director of Turkey

ispmanager

h.h***@ispmanager.com

Showing 20 of 47,571 verified contacts

Refine to your ICP

Narrow these 47,571 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 for free

No credit card required.

Job title distribution

2 (10%)
ceo
1 (5%)
Digital Marketing Specialist
1 (5%)
Seasoned IT Professional and Entrepreneur
1 (5%)
ingà nieur cloud computing
1 (5%)
program manager

// live data

How the RoundCube email list is built with Tomba

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

  1. 01

    Target

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

  2. 02

    Discover

    Domain Search pulls the current decision-makers and their work emails from each matching company, live rather than from a recycled dump.

  3. 03

    Verify

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

  4. 04

    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 build this list with Tomba

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 can reach leads they cannot validate.

Verified before you send

Syntax, MX and SMTP checks plus catch-all detection keep bounces low, and every confirmed hard bounce earns a credit back.

Sources you can check

Every address comes from public web pages Tomba crawls, and the sources behind any email are one request away.

Pay only for results

If Tomba can’t find an email, the search is free: only searches that return a result use a credit.

API, SDKs & MCP

A REST API with 13 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 RoundCube 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.

// npm install tomba
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 RoundCube list
const { data } = await reveal.companiesSearch({
  query: "companies using RoundCube",
  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);
  }
}

With the MCP server connected, ask your AI assistant:

“Use Tomba to find companies using RoundCube, pull their key contacts with domain_search, verify every email including catch-all domains, add direct-dial numbers with phone_finder, then export the RoundCube email list.”

Works in Claude, Cursor, Windsurf and any MCP client. The companies_search, domain_search, email_verifier and phone_finder tools run live. See the remote MCP docs.

Every address comes back with its verification status, catch-all domains included. See the Reveal, Domain Search and Verifier docs for full options.

// pricing

What does the RoundCube email list cost?

No per-list fees and no lock-in: you pay for the searches that return addresses, from $8.98 per 1,000 search credits.

$8.98/ 1,000 search credits

On Pro Plus (50,000 a month). An Email Finder search that returns an address uses 1 credit; Domain Search uses 1 per 10 results.

Includedverification status

Every address a search returns comes with its verification status, catch-all domains flagged, on the same search credit.

$0for empty searches

If Tomba finds no valid address, the search is free. The same search again in the same usage window is free too.

Start free: 25 search credits every 30 days, no card required.

Plans from 2,500 to 350,000 search credits a month, or one-time packs valid for 12 months. The REST API, 13 SDKs and the MCP server come with every plan.

// faq

Frequently asked questions

Still have questions? Visit the help center