Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · Email Verification APIs

Clearout Email Verification vs BillionVerify

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score Clearout Email Verification #5 in Email Verification APIs 9.0/10 Free plan Free plan✓ 1 of 6 features Visit Clearout
BillionVerify #7 in Email Verification APIs 8.8/10 Free plan Free plan✓ 6 of 6 features Visit BillionVerify

Clearout Email Verification leads on 0 checks, BillionVerify on 0, and 7 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreClearout Email Verification · 9.0/10
  • Free planboth
  • Most featuresBillionVerify · 6 of 6

Clearout Email Verification scores higher on our rubric for email verification apis: 9.0 against 8.8 out of 10; our editors rank them #5 and #7.

Clearout Email Verification is the better fit for teams needing forms, files, and webhooks. BillionVerify is the better fit for integrated batch verification with SDKs.

  • Clearout Email Verification fits best

    Teams needing forms, files, and webhooks

  • BillionVerify fits best

    Integrated batch verification with SDKs

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Clearout Email Verification 9.0/10 Visit ↗ BillionVerify 8.8/10 Visit ↗
At a glance
Editor score 9.0 8.8
Ranking #5 in Email Verification APIs #7 in Email Verification APIs
Best for Teams needing forms, files, and webhooks Integrated batch verification with SDKs
Pricing model Free plan + paid Free plan + paid
Starting price $16/mo $20 one-time
Free plan ✓ ✓
Free trial — —
Deployment Cloud Cloud
Platforms Web Web
Support Email, Live chat, Phone, Docs · 24/7 Email, Docs
Compliance SOC 2, ISO 27001, GDPR GDPR, PCI DSS
Integrations 6 integrations 1,553+ integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Clearout Email Verification 1/6 · BillionVerify 6/6
Real-time API Not checked yet ✓ (best)
Batch verification Not checked yet ✓ (best)
Disposable detection ✓ ✓
Role account detection Not checked yet ✓ (best)
Catch-all detection Not checked yet ✓ (best)
SMTP mailbox check Not checked yet ✓ (best)
Our review
Pros
  • Supports individual, CSV, XLSX, API, form, duplicate, and webhook workflows
  • Nine integrations cover CRM, marketing, automation, spreadsheet, and form tools
  • Free plan plus monthly, annual, and pay-as-you-go credit options
  • Synchronous and asynchronous batch verification
  • Five SDKs plus webhooks for completed jobs
  • SMTP, disposable, role-account, and catch-all checks
Cons
  • The Free plan includes only 100 verification credits
  • The $16 monthly rate requires annual billing
  • Pay-as-you-go credits are sold as a one-time 5,000-credit package
  • 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

Clearout Email Verification is a cloud service for marketers, sales teams, developers, and CRM teams that need to check email addresses before outreach or during form submission. It supports individual verification, bulk CSV and XLSX list…

Read the review →

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…

Read the review →
  1. Clearout Email VerificationEmail Verification APIs 9.0Free plan
  2. BillionVerifyEmail Verification APIs 8.8Free plan

Strengths and trade-offs

  • Clearout Email Verification — where it wins

    • Supports individual, CSV, XLSX, API, form, duplicate, and webhook workflows
    • Nine integrations cover CRM, marketing, automation, spreadsheet, and form tools
    • Free plan plus monthly, annual, and pay-as-you-go credit options

    Where it doesn't

    • The Free plan includes only 100 verification credits
    • The $16 monthly rate requires annual billing
    • Pay-as-you-go credits are sold as a one-time 5,000-credit package

  • BillionVerify — 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

More comparisons

All email verification APIs comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update