What is BillionVerify used for?

BillionVerify is an email verification service with single, bulk and API checks using SMTP, MX and reputation signals, plus integration for AI agents. It is a good fit for cleaning lead lists before email campaigns and validating addresses at signup through the API.

Is BillionVerify free?

Yes. BillionVerify has a free plan. 20 free credits per day, up to 600 per month; paid plans are listed on the vendor's pricing page.

Is BillionVerify open source?

No. BillionVerify is proprietary (closed-source) software and can't be self-hosted. In the Email Marketing category, open-source options include Listmonk, BillionMail and Postal.

What are some alternatives to BillionVerify?

BillionVerify competes with ZeroBounce, NeverBounce and Hunter.

BillionVerify: features, pricing and alternatives

About BillionVerify

BillionVerify checks whether email addresses are deliverable before they enter a lead list, signup flow or outbound campaign. It runs syntax, domain, MX, SMTP, reputation and risk checks and reports a status for each address, list or API request.

Users can verify a single address, upload a CSV for bulk list cleaning with a live progress view, and get result breakdowns and export-ready segments. A real-time API supports verification during signup, enrichment and AI agent workflows, and the site markets native AI agent integration. A white-label service is also offered for resellers.

BillionVerify is a hosted commercial product. The site advertises a free allowance of 20 credits per day, capped at 600 per month, and links to pricing, integrations and blog pages. It suits sales and marketing teams and developers who need to reduce bounce rates.

Key features

Real-time SMTP and MX email checks
Bulk CSV list cleaning with live progress
Deliverability and reputation details
Email validation API
Native AI agent integration
White-label service option

Good fit for

→Cleaning lead lists before email campaigns
→Validating addresses at signup through the API

Tags: email-verification; email-validation; bulk-email; api; deliverability; smtp

BillionVerify: questions and answers

What is BillionVerify used for?: BillionVerify is an email verification service with single, bulk and API checks using SMTP, MX and reputation signals, plus integration for AI agents. It is a good fit for cleaning lead lists before email campaigns and validating addresses at signup through the API.
Is BillionVerify free?: Yes. BillionVerify has a free plan. 20 free credits per day, up to 600 per month; paid plans are listed on the vendor's pricing page.
Is BillionVerify open source?: No. BillionVerify is proprietary (closed-source) software and can't be self-hosted. In the Email Marketing category, open-source options include Listmonk, BillionMail and Postal.
What are some alternatives to BillionVerify?: BillionVerify competes with ZeroBounce, NeverBounce and Hunter.