Service
Email List Building Service
Building a high-quality email list is the foundation of successful B2B outreach. We build verified email lists that deliver 95%+ deliverability from day one.
Our email list building service delivers verified business email addresses matched to your target audience. Every email undergoes multi-step validation.
What's Included
Everything you get with email list building
Our Process
How it works
Define your target audience - industry, role, geography, company size
We source and verify matching email addresses
Quality assurance check on deliverability
Deliver your list in your preferred format
Benefits
Why teams choose this service
Scope
What's included in the deliverable
- Verified business email passing SMTP probe + catch-all detection
- Catch-all flag on the record so you can decide whether to send
- Suppression-list intake — your bounces / unsubscribes / DNC suppress automatically
- Format standardization (lowercased, trimmed, dedupe across the order)
- Reverification at delivery (not at the date the record was first built)
- CAN-SPAM-compliant sourcing documentation per record
Method
How we deliver it
Email-only lists run on a tighter pipeline than full custom lists — we skip phone-number verification and focus the entire stack on inbox deliverability. Step 1 is syntax + domain, step 2 is SMTP probe, step 3 is catch-all detection, step 4 is current-employment confirmation. The deliverable is a CSV with each address tagged Verified / Catch-All / Risk so you can pick a stance per send. We re-verify any record that bounces above the 4% threshold at no charge.
Sample output
What the deliverable looks like
Each row: email address, first name, last name, job title, company, company website, LinkedIn URL, verification flag (Verified / Catch-All / Risk), date verified. Catch-all rows are clearly tagged so your sending tool can route them to a separate sub-campaign or skip them entirely.
Pricing example
What it costs in practice
A 10,000-record verified email list at standard ICP runs in the low four figures with delivery in 2–4 business days. Volume discounts apply at 25K+. Re-verification of an existing list costs less than a fresh build because the sourcing is already done.
A SaaS team had been running cold email at 12% bounce rate from a shared-database export. We rebuilt the list at the same ICP with our verification stack — bounce rate dropped to under 3% on the first send. Same SDRs, same sequences, same volume, four times the meetings booked. See the deliverability post for the operational playbook behind that result.
Boundaries
What we won't do
Honest scope. We'd rather pass on a project than deliver something we can't stand behind.
- Algorithmically guess email addresses from name patterns — every email is verified at the mailbox level.
- Strip catch-all flags to inflate verification rates.
- Send role-based addresses (info@, sales@) on personal-outreach lists.
- Source from breach data or scraped consumer signups.
More FAQs
Additional questions about this service
Do you handle the suppression list automatically?
Yes. Send us your suppression file at order intake (bounces, unsubscribes, do-not-contact) and we exclude every match before delivery. We never re-mail a suppressed address.
How fresh is "fresh"?
Every email passes verification within 7 days of delivery. We do not deliver from a shelf or a stale cache.
Related Use Cases
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Related Data Types
Data this service delivers
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Frequently asked questions
Get started with email list building
Contact us to discuss your email list building needs or try a sample first.