Hydrogen Email List
Build a high-converting Hydrogen prospect list powered by verified B2B contact data so your revenue team can connect with high-intent, in-market buyers.
10,049
Verified contacts
4,052
Companies
Hydrogen Email List (sample 8)
Download Full List| Name & Title | Company | Status | |
|---|---|---|---|
G Gail Buxbaum administrator | REB Research & Consulting | bu***@rebresearch.com | ✓ Verified |
C Cullen Hall Vice President of Product Development | Genh2 | cul***@genh2.com | ✓ Verified |
H Helen Walker director | H2OPE Group | hel***@h2ope.co.uk | ✓ Verified |
C Crystal Nichols Dispatch/Warehouse Manager | EPC | cn***@epc4h2.com | ✓ Verified |
N Nikka Blas events coordinator | asia-pacific hydrogen association | n***@apac-hydrogen.org | ✓ Verified |
J Jarrod Greenspan Controller | NEL Hydrogen | jgr***@nelhydrogen.com | ✓ Verified |
W Wouter Dalhuijsen System Engineer | hyet | wou***@hyet.nl | ✓ Verified |
N Neel Sirosh Chief Technology Officer | H2MOF | n.***@h2mof.com | ✓ Verified |
Showing 8 of 10,049 verified contacts
Refine to your ICP
Narrow these 10,049 contacts down to the ones that match your ideal customer profile.
No credit card required.
“We turned a messy list of 8,000 accounts into 200 high-intent companies in an afternoon. Our reply rates doubled the very next week.”
Marcus D.
Head of Growth
Job Title Distribution
Live data, powered by AI
How the Hydrogen email list is built with Tomba
This isn’t a static file that quietly rots. Every verticals list is assembled live from the Tomba API and verified before it reaches you — current, deliverable, and yours to export in minutes.
- 1
Target
Pick your filters — industry, technology, job title, department, company size, country or US state. Tomba Reveal maps the exact companies that match.
- 2
Discover
Domain Search pulls the current decision-makers and their work emails from each matching company in real time — pulled live, never a recycled dump.
- 3
Verify
Every address is SMTP-checked and AI-scored the moment it is found — including catch-all (accept-all) domains most tools skip — for 99% deliverability.
- 4
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 Tomba is the best way to build this list
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 reach leads nobody else can validate.
99% accuracy
Real-time SMTP + AI checks keep bounce rates low and protect your sender reputation and domain health.
Live & fresh
Assembled on demand from live sources — never a resold, months-old database that has already decayed.
Only pay for valid emails
If Tomba can’t find a valid email, the search is free. You never spend credits on dead or guessed addresses.
API, SDKs & MCP
A REST API with 10 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 Hydrogen 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.
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 Hydrogen list
const { data } = await reveal.companiesSearch({
query: "Hydrogen companies",
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);
}
}Verification is bundled free — Tomba scores catch-all / accept-all domains other tools skip. See the Reveal, Domain Search and Verifier docs for full options.
Transparent, pay-as-you-go pricing
What does the Hydrogen email list cost?
No per-list fees and no lock-in. You pay only for the verified contacts you export — from $8.90 per 1,000 valid emails, with AI and catch-all verification included.
Pay-as-you-go credits — 1 credit per valid email found via Domain Search or Email Finder. Buy only what you need.
Every email is verified — including catch-all domains — at no extra credit cost. Verification is bundled, not billed.
If Tomba can’t find a valid email, the search is free. Duplicate lookups in the same month are free too.
Start free — 25 searches & 50 verifications, no card required.
Credits scale from 5,000 to 2,000,000 / month and stay valid for 12 months. REST API, 10 SDKs, and MCP included on every plan.
FAQ
Frequently asked questions
Freshness, catch-all verification, coverage and cost — answered.
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