Close email verification with BillionVerify
Close is a sales CRM built for high-velocity outreach, combining email, calling, and pipeline management in one place. BillionVerify integrates with Close to validate prospect emails before sequences start, protecting your sender reputation and ensuring every outreach attempt lands in a real inbox.
Why verify before the send
Sales teams rely on accurate contact data to hit their numbers, but lists sourced from imports, enrichment tools, or web forms inevitably contain bad addresses. In Close, a single unverified import can trigger a wave of bounces that damages your domain reputation for weeks. BillionVerify screens out invalid, disposable, role-based, and catch-all addresses before they ever enter an active sequence.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Close 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 Close
Ready-to-use workflows that verify emails before Close sends.
How it works
- 1
Connect Close to n8n using the Close node, or set up a trigger via Integrately.
- 2
On lead creation or import, pass the prospect email to BillionVerify's API.
- 3
BillionVerify returns a verification result covering deliverability, disposable status, catch-all flag, and role address detection.
- 4
Use workflow logic to add a tag or custom field in Close reflecting the verification outcome.
- 5
Filter active sequences to include only leads tagged as verified-valid, keeping bounce rates well below email provider thresholds.
When to use this
Screen leads before adding to sequences
When a new lead is created in Close, trigger a BillionVerify check before enrolling them in an email sequence. Only deliverable addresses enter your cadences, reducing bounce rates and keeping your domain reputation strong.
Validate bulk lead imports
Before importing a CSV of prospects into Close, run the list through BillionVerify's bulk API. Remove bad addresses upstream so your sales team spends time on real opportunities, not bounced emails.
Flag catch-all and role addresses for human review
BillionVerify identifies catch-all domains and role-based emails like sales@ or info@ that may never reach a decision-maker. Route these to a review queue in Close rather than automating outreach to them.
FAQ
Why does bounce rate matter for a CRM like Close?
Close sends email directly through your connected mailbox. High bounce rates signal to email providers that your domain sends to bad addresses, which can trigger spam filtering or even domain blacklisting, hurting deliverability across all outreach.
Can BillionVerify detect addresses from free providers like Gmail or Yahoo?
Yes. BillionVerify identifies the provider type for each address, including free webmail providers, which helps sales teams decide how to prioritize or personalize outreach.
How do I set up the integration without developer resources?
Use Integrately's 1-click BillionVerify integration to connect Close triggers to verification in minutes — no coding required. For custom logic, the n8n community node offers more advanced workflow control.
Should I verify existing contacts already in Close?
Yes, especially for contacts that have been inactive or were imported months ago. Email deliverability degrades over time as people change jobs. Running periodic bulk verification on your Close contacts keeps the database current.
Verify emails in Close
Create a free account, grab your API key, and stop bounces before they happen.
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