ZoomInfo and BillionVerify serve different steps in the same workflow.
ZoomInfo is an enterprise B2B intelligence platform. It maintains a continuously updated database of companies and contacts, enriches records with firmographic and technographic data, and provides intent signals to help sales and marketing teams prioritize outreach. ZoomInfo's data quality process includes automated record verification and human editorial review to keep contact information current.
BillionVerify provides SMTP-level email deliverability verification at the point of import. When you upload a ZoomInfo export, BillionVerify connects to each domain's mail server and confirms whether the mailbox currently accepts delivery. That check runs at the moment you execute it — independent of when ZoomInfo last refreshed the record.
ZoomInfo and BillionVerify operate at different layers. ZoomInfo manages contact data quality and completeness across its database. BillionVerify confirms that a specific email address is deliverable right now, before it enters your sender infrastructure. Customers who use both get ZoomInfo's data depth and BillionVerify's pre-send confirmation as a final gate before campaigns launch.
What ZoomInfo does vs what BillionVerify does.
| Dimension | ZoomInfo | BillionVerify |
|---|---|---|
| Purpose | Provide enterprise-grade B2B contact and company intelligence | Verify current email deliverability at the SMTP level |
| How it works | Continuous database updates using automated crawlers, editorial review, and contributor data | Connects to the receiving mail server and checks whether the mailbox accepts delivery |
| Output | Enriched contact records with job title, company data, direct dial, intent signals, and email | Result per address: Valid, Invalid, Catch-all, Role-based, Unknown, Disposable |
| When to use it | Building targeted account and contact lists; enriching records in a CRM | Before importing a list into a sender, CRM, or outbound sequence |
| What it cannot do | Guarantee that an email address is deliverable at the moment of sending | Source contacts, enrich records with firmographic or intent data |
Where ZoomInfo's data quality ends and BillionVerify begins.
ZoomInfo's internal data quality processes keep records as current as its update cycle allows. The challenge is that email deliverability changes independently of data quality: a record can be accurate in ZoomInfo's database while the mailbox is temporarily suspended, the employee has moved to a new company, or the domain has updated its mail server configuration.