Clean your HubSpot contacts before they bounce, and stop paying your marketing-contacts tier for addresses that no longer exist.
Clean my HubSpot list, free Bulk verifier 100 free credits, no card. Pay only for Passed & Failed. Credits never expire.HubSpot bills by marketing-contact tier in fixed increments. Every invalid or bounced address you still mark as a marketing contact can push you into the next tier. Verify your list, set the bad ones as non-marketing, and you protect both your deliverability and your bill. HubSpot's own email verification is sender and domain level, not contact level, so it never tells you which individual contacts are about to bounce.
The specific ways an unverified HubSpot list costs you money and deliverability.
Dead addresses still counted as marketing contacts inflate your tier, in 1,000 and 5,000 increments. You pay to store and message mailboxes that no longer exist.
Sending to invalid contacts drives hard bounces, which can trigger sending restrictions and quietly lower inbox placement for your good contacts.
HubSpot validates your sending domain, not the contacts on your lists, so stale and mistyped addresses sit there until they bounce.
The accurate, current steps, from export to a clean, safe-to-send list.
In HubSpot go to CRM, Contacts (or a specific list), select the records, and choose Export to download a CSV. Export by list or segment for large databases.
Run the file through Email Verifier API. HubSpot has no contact-level verification, so this is where invalid, catch-all, role and disposable addresses are identified.
In HubSpot select the bad contacts, choose More, then Set as non-marketing contacts (or use a workflow action). This removes them from your billable marketing total without deleting their history. Note it takes effect on your next update date, not instantly.
To suppress addresses, use Contacts, Import, Import data, List of contacts to opt out of emails, and upload the failed addresses with an Email column. New addresses are not added to your billable total.
What the native option does, and where real verification fills the gap.
| Capability | HubSpot (native) | Email Verifier API |
|---|---|---|
| Contact-level verification | No (domain/sender only) | Yes, every contact |
| Catch-all & role detection | No | Yes, flagged clearly |
| Protects your contacts-tier bill | No | Yes, identify non-marketing candidates |
| Real-time API for new contacts | No | Yes, verify at point of entry |
| Credits expire | n/a | Never |
Cleaning your HubSpot list, answered.
HubSpot verifies your sending domain and email setup, not the individual contacts on your lists. To find which contacts will bounce, you verify the list with an external tool like Email Verifier API, then set the bad ones as non-marketing or import them as an opt-out list.
Setting them as non-marketing is usually better: it removes them from your billable marketing-contacts total, keeps their history, and is reversible. Deleting loses the record entirely. Use deletion only when you are certain you never need the contact.
It can. HubSpot prices by marketing-contact tier in fixed increments, so moving invalid contacts to non-marketing can drop you below a tier boundary. The change applies on your next update date and pricing adjusts at renewal.
Call the Email Verifier API in real time when a contact is created (via your forms or workflow automation), and branch on the result so invalid addresses never become billable marketing contacts.
Pay-as-you-go, one credit per address, billed only for Passed and Failed results, credits never expire, and 100 free credits to start.
Start with 100 free credits, no credit card. See exactly how many of your HubSpot contacts are about to bounce.
Verify my list free