How to find and verify work emails for a HubSpot prospect list using Apollo and Hunter
Take a list of prospects in HubSpot with names and companies but no email, find their work emails via Apollo, verify deliverability with Hunter, and update HubSpot with verified addresses.
Why find and verify emails?
You have a list of target prospects in HubSpot — maybe from a trade show, a purchased list, or manual research — but many are missing email addresses. And even when you have emails, some may be outdated or personal addresses that won't reach the prospect at work.
This workflow finds verified work emails automatically:
- Searches Apollo for work emails using name + company domain
- Verifies each email's deliverability via Hunter
- Writes verified addresses back to HubSpot
- Flags unverifiable contacts for manual review
What you'll need
- HubSpot account with API access
- Apollo API key with email finder credits
- Hunter.io API key with verification credits
- A HubSpot list or filter identifying contacts without emails
Choose your approach
Select an approach below to see the full step-by-step guide.
n8n
mediumHubSpot search → Apollo email finder → Hunter verify → HubSpot update
Zapier
mediumSchedule trigger → Webhooks to Apollo/Hunter APIs → Update Contact
Agent Skill
lowAgent skill to find and verify emails for a contact list on demand
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Frequently Asked Questions
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