Hunter email verification with BillionVerify
Hunter helps sales and outreach teams find and verify professional email addresses at scale. Pairing it with BillionVerify adds a second layer of validation — catching invalid, disposable, and catch-all addresses before they ever enter your sequences and damage your sender reputation.
Why verify before the send
Hunter surfaces contact emails from public sources, but discovered addresses can still be outdated, role-based, or belong to catch-all domains that silently accept everything. Running each address through BillionVerify before outreach removes hard-bounce risk, keeps your domain reputation clean, and ensures your messages reach real decision-makers.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Hunter sends, so only deliverable contacts are emailed. Install the BillionVerify community node first, then add your API key. Adapted from this n8n template
Workflow templates with Hunter
Ready-to-use workflows that verify emails before Hunter sends.
How it works
- 1
Connect Hunter and BillionVerify in n8n using the BillionVerify community node, or set up a 1-click automation via Integrately.
- 2
Trigger the workflow whenever Hunter finds or exports a new email address.
- 3
BillionVerify checks syntax, DNS/MX records, SMTP reachability, disposable-domain lists, and catch-all status.
- 4
Addresses that pass verification are tagged and sent to your CRM or outreach sequence.
- 5
Invalid or risky addresses are flagged and routed to a review queue or discarded automatically.
When to use this
Scrub Prospected Leads Before Outreach
Each time Hunter returns a new batch of contacts, trigger BillionVerify to filter out invalid and disposable addresses. Only verified, deliverable emails move forward to your outreach tool, protecting your sending domain from the start.
Enrich and Gate CRM Entry
Before writing a Hunter-sourced contact into your CRM, verify the email address. Block undeliverable and role-based addresses (info@, sales@) from entering your pipeline so reps always work with clean, actionable leads.
FAQ
Does BillionVerify replace Hunter's built-in confidence score?
They complement each other. Hunter's score estimates deliverability from pattern matching, while BillionVerify performs a live SMTP handshake to confirm the mailbox exists right now.
Can I verify addresses in bulk after a Hunter domain search?
Yes. Export the full list, pass it to BillionVerify's REST API, and import the verified subset back into your outreach tool — the whole process can be automated in n8n.
What happens with catch-all domains?
BillionVerify flags catch-all mailboxes specifically, so you can decide whether to include, skip, or separately segment those contacts rather than treating them the same as fully verified addresses.
Verify emails in Hunter
Create a free account, grab your API key, and stop bounces before they happen.
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