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Head-to-head · Email Verification APIs

QuickEmailVerification vs BillionVerify

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score QuickEmailVerification #1 in Email Verification APIs 9.4/10 Free plan Free plan✓ 1 of 6 features Visit site
BillionVerify #7 in Email Verification APIs 8.8/10 Free plan Free plan✓ 6 of 6 features Visit BillionVerify

QuickEmailVerification 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 scoreQuickEmailVerification · 9.4/10
  • Free planboth
  • Most featuresBillionVerify · 6 of 6

QuickEmailVerification scores higher on our rubric for email verification apis: 9.4 against 8.8 out of 10; our editors rank them #1 and #7.

QuickEmailVerification is the better fit for budget-conscious API and bulk checks. BillionVerify is the better fit for integrated batch verification with SDKs.

  • QuickEmailVerification fits best

    Budget-conscious API and bulk checks

  • BillionVerify fits best

    Integrated batch verification with SDKs

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Side by side

Feature QuickEmailVerification 9.4/10 Visit ↗ BillionVerify 8.8/10 Visit ↗
At a glance
Editor score 9.4 8.8
Ranking #1 in Email Verification APIs #7 in Email Verification APIs
Best for Budget-conscious API and bulk checks Integrated batch verification with SDKs
Pricing model Free plan + paid Free plan + paid
Starting price $4 one-time $20 one-time
Free plan ✓ ✓
Free trial — —
Deployment Cloud Cloud
Platforms Web Web
Support Email, Docs · 24/7 Email, Docs
Compliance ISO 27001, GDPR, HIPAA GDPR, PCI DSS
Integrations 50+ integrations 1,553+ integrations
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features QuickEmailVerification 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
  • REST API supports real-time verification and signup forms
  • Checks syntax, domains, MX records, mailboxes, roles, and disposables
  • CSV, TXT, XLS, XLSX, and ODS uploads plus 15 integrations
  • Synchronous and asynchronous batch verification
  • Five SDKs plus webhooks for completed jobs
  • SMTP, disposable, role-account, and catch-all checks
Cons
  • Free credits are limited to 100 verifications per day
  • No AI features or open-source distribution
  • Reports and checks may be more than simple one-off needs require
  • 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

QuickEmailVerification is a web-based email verification service for marketers, developers, agencies, and businesses. It supports bulk list verification through file uploads and real-time checking through a REST API, including application…

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. QuickEmailVerificationEmail Verification APIs 9.4Free plan
  2. BillionVerifyEmail Verification APIs 8.8Free plan

Strengths and trade-offs

  • QuickEmailVerification — where it wins

    • REST API supports real-time verification and signup forms
    • Checks syntax, domains, MX records, mailboxes, roles, and disposables
    • CSV, TXT, XLS, XLSX, and ODS uploads plus 15 integrations

    Where it doesn't

    • Free credits are limited to 100 verifications per day
    • No AI features or open-source distribution
    • Reports and checks may be more than simple one-off needs require

  • 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