// 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.
- verified contacts
- 43,803
- companies
- 2,112
ClustrMaps Widget Email List (sample 20)
Download the full list| Name and title | Company | Status | |
|---|---|---|---|
E Edgar Cardoze founder Ning | Ning | edg***@ning.com | Verified |
I Irina Cherepanova project manager uCoz support | uCoz support | i***@ucoz.ru | Verified |
J Joshua Skov Industry Mentor and Instructor University of Oregon | University of Oregon | j***@uoregon.edu | Verified |
M Mark Ford Applications Engineer Technical Sales & Service SiteMercado | SiteMercado | m***@site123.me | Verified |
N Nick Mango Co-Owner and Head of Product Limited Run | Limited Run | n***@limitedrun.com | Verified |
B Brian False cto PBworks | PBworks | bri***@pbworks.com | Verified |
A Abhishek Singh I am a Composting Artist currently working KOOP360 | KOOP360 | abh***@lnk.bio | Verified |
I Iacopo Rovelli member the organising team United Kingdom Explosion Liaison Group (UKELG) | United Kingdom Explosion Liaison Group (UKELG) | ir***@ic.ac.uk | Verified |
M Mariusz Nowosielski cto datacenter Kylos Data Center | Kylos Data Center | i***@kylos.pl | Verified |
C Catherine Wareham administrative assistant Swarthmore College | Swarthmore College | cw***@swarthmore.edu | Verified |
Å Å��支伟 Zhiwei lecture Nankai University | Nankai University | pe***@nankai.edu.cn | Verified |
Z Zaiton Yusof assistant science off University of Malaya | University of Malaya | za***@um.edu.my | Verified |
M Miles Grunavld teaching assistant Elon University | Elon University | mgr***@elon.edu | Verified |
S Steven Shiau researcher National Center for High-performance Computing | National Center for High-performance Computing | st***@nchc.org.tw | Verified |
A Alain Adde director facilities materials Ecole Polytechnique | Ecole Polytechnique | web***@polytechnique.fr | Verified |
M Marcellin Marcellin petitfrère chanteur 2U | 2U | mar***@u2.com | Verified |
G Gary Usher sales manager Metal Blade | Metal Blade | g***@metalblade.com | Verified |
B Badiaa Dellal maà tre de recherche Cerist | Cerist | bd***@cerist.dz | Verified |
A Ahmad Ridho lecturer UIN Syarif Hidayatullah Jakarta | UIN Syarif Hidayatullah Jakarta | ahm***@uinjkt.ac.id | Verified |
M Marie-laure Mugnier University Professor LIRMM | LIRMM | mar***@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.
No credit card required.
// live data
How the ClustrMaps Widget 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.
- 01
Target
Pick your filters: industry, technology, job title, department, company size, country or US state. Tomba Reveal maps the companies that match.
- 02
Discover
Domain Search pulls the current decision-makers and their work emails from each matching company, live rather than from a recycled dump.
- 03
Verify
Every address is SMTP-checked and AI-scored the moment it is found, including catch-all (accept-all) domains most tools skip.
- 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 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.
// 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 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);
}
}// go get github.com/tomba-io/go
package main
import (
"fmt"
"os"
"github.com/tomba-io/go/tomba"
"github.com/tomba-io/go/tomba/models"
)
func main() {
client := tomba.New(os.Getenv("TOMBA_API_KEY"), os.Getenv("TOMBA_SECRET_KEY"))
// 1. Reveal: find companies for the ClustrMaps Widget list
companies, err := client.SearchCompanies(&models.RevealSearchRequest{
Query: "companies using ClustrMaps Widget",
Page: 1,
})
if err != nil {
panic(err)
}
for _, company := range companies.Data.Companies {
// 2. Domain Search: pull live contacts + emails
res, err := client.DomainSearch(tomba.Params{
"domain": company.WebsiteURL,
"limit": 20,
})
if err != nil {
continue
}
for _, contact := range res.Data.Emails {
// 3. Verifier: AI + catch-all verification
check, _ := client.EmailVerifier(tomba.Params{"email": contact.Email})
if check.Data.Email.Status != "valid" {
continue
}
// 4. Phone Finder: add a direct-dial number (5 credits)
dial, _ := client.PhoneFinder(tomba.Params{"email": contact.Email})
fmt.Println(contact.Email, contact.Position, string(dial.Data))
}
}
}# export TOMBA_API_KEY=ta_xxxx TOMBA_SECRET_KEY=ts_xxxx
# 1. Reveal: find companies for the ClustrMaps Widget list
curl -s -X POST https://api.tomba.io/v1/reveal/search \
-H "X-Tomba-Key: $TOMBA_API_KEY" \
-H "X-Tomba-Secret: $TOMBA_SECRET_KEY" \
-H "Content-Type: application/json" \
-d '{"query": "companies using ClustrMaps Widget", "page": 1}'
# 2. Domain Search: pull live contacts from a company
curl -s "https://api.tomba.io/v1/domain-search?domain=piedpiper.com&limit=20" \
-H "X-Tomba-Key: $TOMBA_API_KEY" \
-H "X-Tomba-Secret: $TOMBA_SECRET_KEY"
# 3. Verify: AI + catch-all verification (accept-all included)
curl -s "https://api.tomba.io/v1/email-verifier/richard@piedpiper.com" \
-H "X-Tomba-Key: $TOMBA_API_KEY" \
-H "X-Tomba-Secret: $TOMBA_SECRET_KEY"
# 4. Phone Finder: get a direct-dial number for a contact (5 credits)
curl -s "https://api.tomba.io/v1/phone-finder?email=richard@piedpiper.com" \
-H "X-Tomba-Key: $TOMBA_API_KEY" \
-H "X-Tomba-Secret: $TOMBA_SECRET_KEY"{
"mcpServers": {
"tomba": {
"url": "https://mcp.tomba.io/mcp",
"headers": {
"Authorization": "Bearer <base64 of ta_key:ts_secret>"
}
}
}
}With the MCP server connected, ask your AI assistant:
“Use Tomba to find companies using ClustrMaps Widget, pull their key contacts with domain_search, verify every email including catch-all domains, add direct-dial numbers with phone_finder, then export the ClustrMaps Widget 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 ClustrMaps Widget 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.
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.
Every address a search returns comes with its verification status, catch-all domains flagged, on the same search credit.
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.
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