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// verified b2b email list

Customer Retention Email List

Prospect customer retention decision-makers with verified, deliverable B2B email addresses and firmographic data to power cold email and focused account.

verified contacts
1,970,141
companies
277,350
Syntax, MX and SMTP checked Catch-all detection Credit back for confirmed hard bounces

Customer Retention Email List (sample 20)

Download the full list
Name and title Email
V

Vera Lake

Technical Product Manager, Data Analyst

CityGro

v***@citygro.com
R

Ryan Sacha

founder ceo

Promotify

r***@promotify.co
M

Marci Stevenson

office manager and accounts payable

M Squared Group

mar***@msquaredgroup.com
B

Brian Appeldoorn

owner

Retention Solutions

b***@retention-solutions.net
L

Luis Santos

President

Redis Marketing

l***@redismarketinginc.com
D

Dale Dubberley

ceo

Drive Business Intelligence

ddu***@drivebi.com
N

Niels Zanotto

Co-Founder

Keaz

n***@keaz.app
R

Ryan Rahadian

CRM Senior Account Manager

Eways Links

rya***@ewaysindo.id
H

Harry Haryatno

adm. and Operation Client service

eways/links

hha***@ewayscorp.com
G

Greg Gonsior

director data services

Centriam

gre***@centriam.com
T

Terri Schepps

ceo president

Retention Resource Center LLC

ts***@rrc.us.com
J

Johan Frodell

vd

Releasy

joh***@releasy.se
C

Curtis Bingham

customer retention

predictive consulting group

cnb***@predictiveconsulting.com
S

Saneem Perinkadakkat

founder

Elegant Surveys

sa***@elegantsurveys.com
S

Saul Aldana

director of i.t

Spectrum Services

sa***@spectrumservices.net
P

Paul Ashby

owner

ICOM Information & Communications

p***@shoppersvoice.com
G

Gabe Barnes

managing director

RevKick

gb***@revkick.com
R

Ralph Encarnacion

Lead Generation Specialist

CX Group

r***@cxgroup.co
C

Chris Alderson

Owner, Credit Card Processing and Financial Services Consultant

DiversiForm

chr***@diversiform.com
K

Kevin Jaquith

managing partner + digital marketing + growth lead

Flux + Flow

k***@fluxandflow.co

Showing 20 of 1,970,141 verified contacts

Refine to your ICP

Narrow these 1,970,141 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%)
owner
1 (5%)
Technical Product Manager, Data Analyst
1 (5%)
founder ceo
1 (5%)
office manager and accounts payable
1 (5%)
President

// live data

How the Customer Retention 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 Customer Retention 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 Customer Retention list
const { data } = await reveal.companiesSearch({
  query: "companies with 50+ employees",
  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",
    department: "support", // support contacts
  });

  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 with 50+ employees, pull their support contacts with domain_search, verify every email including catch-all domains, add direct-dial numbers with phone_finder, then export the Customer Retention 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 Customer Retention 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