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// verified b2b email list

Unpkg Email List

Access a verified email list of companies that use Unpkg, with accurate contact data for sales prospecting, integrations, and competitive displacement.

verified contacts
7,433,114
companies
260,811
Syntax, MX and SMTP checked Catch-all detection Credit back for confirmed hard bounces

Unpkg Email List (sample 20)

Download the full list
Name and title Email
I

Iryna Prokopova

Sr. Director, Technical Program Management

Vimeo

iry***@vimeo.com
M

Malissa Wolenski

Realtor Associate

Bitly

mwo***@bit.ly
K

Kate Maxwell

Microsoft CTO, Worldwide Public Sector

Microsoft

k***@windows.com
J

Jason Bigman

Head of Community Partnerships

Reddit

jas***@reddit.com
A

Anand Chitipothu

software consultant and trainer

Internet Archive

a***@archive.org
K

Kelby Thomasson

Geographic Information Systems Techical/Analyst Lead

Esri

k***@arcgis.com
C

Craig Kline

Consulant

F5 Networks

c.***@f5.com
W

Walter Kuhn

Director Federal Government Affairs

Shopify

wal***@shopify.com
B

Bryce Cardwell

Partnered photographer

Webflow

b***@webflow.io
P

Pam Renall

Media Operations & Client Leadership Executive

Slack

p***@slack.com
G

Gil Chamiel

director data science algorithm engineering

Taboola

g***@taboola.com
S

Sam Gates

Sales Strategist

Indeed

sg***@indeed.com
J

Jon Christopherson

Seasoned IT Professional and Entrepreneur

cPanel

j***@cpanel.net
B

Brandon Gandy

Game Developer

ArtStation (Epic Games)

br***@artstation.com
M

Maleko Taylor

devops engineer

LaunchDarkly

ma***@launchdarkly.com
H

Hamza Erbay

front end developer

Udemy

h***@udemy.com
C

Calder Zwerling

Head of Recruiting

OpenSea

ca***@opensea.io
E

Eric Demuth

chief executive officer

Bitpanda

e***@bitpanda.com
J

Jonathan Yacobi

Student going to school to obtain my doctorate in physical therapy

T-Mobile

jon***@t-mobile.com
A

Andrew Phelan

sales manager

Sharethrough

ap***@sharethrough.com

Showing 20 of 7,433,114 verified contacts

Refine to your ICP

Narrow these 7,433,114 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.

// live data

How the Unpkg 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 Unpkg 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 Unpkg list
const { data } = await reveal.companiesSearch({
  query: "companies using Unpkg",
  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 Unpkg, pull their key contacts with domain_search, verify every email including catch-all domains, add direct-dial numbers with phone_finder, then export the Unpkg 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 Unpkg 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