BillionVerify
BillionVerify: A practical choice for API-led single and batch email verification. Ranked #7 of 31 in Email Verification APIs by our editors (8.8/10); pricing: Free plan; best for integrated batch verification with SDKs.
At a glance
- Editor score8.8 / 10
- PricingFree plan
- Best forIntegrated batch verification with SDKs
- Free planYes
- Paid from$20 one-time
- Real-time APIYes
- Facts checked20 Sep 2026
Where it wins
- Synchronous and asynchronous batch verification
- Five SDKs plus webhooks for completed jobs
- SMTP, disposable, role-account, and catch-all checks
Where it doesn't
- Free usage is limited to 20 daily and 600 monthly credits
- Starter is a one-time 20,000-credit package
- Batch work centers on CSV, TXT, and XLSX file processing
Our verdict on BillionVerify
BillionVerify is an email verification service for developers, sales teams, marketers, agencies, and enterprises. It supports real-time single-email checks through a REST API, synchronous and asynchronous batch verification, and file processing for CSV, TXT, and XLSX formats. Verification can cover deliverability, SMTP mailbox status, disposable addresses, role accounts, catch-all domains, and reputation signals. The product is a good fit for teams that need verification inside operational workflows rather than a standalone list-cleaning process.
Pricing is straightforward across two plans. The Free Plan provides 20 free credits daily and 600 free credits monthly, with single-email verification and credits that never expire. Starter costs $20 one time and includes 20,000 credits, with no monthly fees and payment based on usage. This structure suits occasional or variable workloads, while teams with recurring, high-volume needs should plan around credit consumption rather than a fixed monthly allowance. The free tier also gives developers a way to build around the API before purchasing additional capacity.
Its strongest area is integration flexibility. BillionVerify combines API access with webhooks for completed jobs and SDKs for Python, Node.js, Go, PHP, and Java. It also connects with Zapier, Make, HubSpot, Mailchimp, Salesforce, Gmail, Google Sheets, Slack, Pipedrive, Klaviyo, Shopify, and Brevo. Those options support both direct engineering workflows and connected sales or marketing processes. Choose BillionVerify when batch processing, multiple implementation paths, and layered email checks matter. Choose another option if your priority is a broader marketing platform or a recurring subscription model with a predictable monthly allowance.
Your product? Our editors can test BillionVerify in depth and publish a review, labelled as paid · from $149/mo →
BillionVerify pricing
All 2 BillionVerify plans and prices →
BillionVerify fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $20 one-time |
| Real-time API | Yes |
| Batch verification | Yes |
| Disposable detection | Yes |
| Role account detection | Yes |
| Catch-all detection | Yes |
| SMTP mailbox check | Yes |
| Deployment | Cloud |
| Platforms | Web |
| Compliance & security | GDPR, PCI DSS |
| Support | Email, Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 1,553+ integrations: Zapier, Make, HubSpot, Mailchimp, Salesforce, Gmail … See all → |
| Pricing | Free plan (source) |
| Website | billionverify.com |
| Facts checked | 20 Sep 2026 |
BillionVerify integrations
BillionVerify lists 1,553+ integrations on its own site — the 12 named here are the ones its pages call out.
- Zapier
- Make
- HubSpot
- Mailchimp
- Salesforce
- Gmail
- Google Sheets
- Slack
- Pipedrive
- Klaviyo
- Shopify
- Brevo
See all BillionVerify integrations →
Alternatives to BillionVerify
- QuickEmailVerificationA flexible, low-cost verifier for API workflows, bulk lists, and signup forms.9.4
- Abstract Email Validation APIBroad email verification coverage for developers, growth teams, and enterprise workflows.9.3
- BouncerFlexible email verification with non-expiring credits, APIs, forms, and integrations.9.2
See all BillionVerify alternatives →
BillionVerify vs the competition
- BillionVerify vs QuickEmailVerification
- BillionVerify vs Abstract Email Validation API
- BillionVerify vs Bouncer
- BillionVerify vs ZeroBounce
- BillionVerify vs Clearout Email Verification
- BillionVerify vs Verifalia
Compare BillionVerify with any tool side by side →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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