// verified b2b email list
Mastodon Email List
Connect with organizations powered by Mastodon using verified, up-to-date B2B email addresses, perfect for technographic-based lead generation and outreach.
- verified contacts
- 63,226
- companies
- 2,464
Mastodon Email List (sample 20)
Download the full list| Name and title | Company | Status | |
|---|---|---|---|
A Anand Chitipothu software consultant and trainer Internet Archive | Internet Archive | a***@archive.org | Verified |
N Nora Laufer wirtschaftsredakteurin derStandard.at | derStandard.at | nor***@derstandard.at | Verified |
J John Matherly founder Shodan | Shodan | joh***@shodan.io | Verified |
J Jim Mackenzie VP, Trust & Safety Matrix | Matrix | jim***@matrix.org | Verified |
G Georg Hempel professor of clinical pharmacy University of Münster | University of Münster | he***@uni-muenster.de | Verified |
C Caroline Roodenburg Projectleider Leerlijn Gespreksvoering/ Leerprogramma Activering Municipality of Amsterdam | Municipality of Amsterdam | c.r***@amsterdam.nl | Verified |
R Ronnie Berntsson assistant professor Umeå University | Umeå University | ron***@umu.se | Verified |
A Alanna Irving Team Member Premium FakeID | Premium FakeID | al***@opencollective.com | Verified |
S Sarena Neyman Grant Writer Fight for the Future | Fight for the Future | sa***@fightforthefuture.org | Verified |
A Adam Block owner operator The WELL | The WELL | b***@well.com | Verified |
L Lucinda Fonseca Accounting Manager The Omni Group | The Omni Group | lu***@omnigroup.com | Verified |
W Wido Potters manager support&sales BIT Internet Technology | BIT Internet Technology | w***@bit.nl | Verified |
S Sarvar Muminov Founding Engineer bitdrift | bitdrift | sa***@bitdrift.io | Verified |
M Mark Seaborn software engineer Mythic Beasts | Mythic Beasts | m***@mythic-beasts.com | Verified |
J Jaroslava Haladova editor Czech Radio | Czech Radio | jar***@rozhlas.cz | Verified |
L Leah Stephenson chief operations officer Craft CMS | Craft CMS | l***@craftcms.com | Verified |
W Willem Toorop systems and software engineer NLnet Labs | NLnet Labs | too***@nlnetlabs.nl | Verified |
N Nyri Scanlon Library Volunteer California Academy of Sciences | California Academy of Sciences | ns***@calacademy.org | Verified |
M Minette Henriksson product owner sunet lms SUNET | SUNET | min***@sunet.se | Verified |
A Adam Ierymenko founder ZeroTier | ZeroTier | ada***@zerotier.com | Verified |
Showing 20 of 63,226 verified contacts
Refine to your ICP
Narrow these 63,226 contacts down to the ones that match your ideal customer profile.
No credit card required.
Job title distribution
// live data
How the Mastodon 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 Mastodon 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 Mastodon list
const { data } = await reveal.companiesSearch({
query: "companies using Mastodon",
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 Mastodon list
companies, err := client.SearchCompanies(&models.RevealSearchRequest{
Query: "companies using Mastodon",
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 Mastodon 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 Mastodon", "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 Mastodon, pull their key contacts with domain_search, verify every email including catch-all domains, add direct-dial numbers with phone_finder, then export the Mastodon 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 Mastodon 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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