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usecheck

Freemium#28 of 31 in Email Verification APIs

usecheck: A focused API for real-time email and domain checks, with a free tier and four developer integrations. Ranked #28 of 31 in Email Verification APIs by our editors (6.7/10); pricing: Free plan; best for simple real-time API validation.

6.7/10★★★☆☆Editor score

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At a glance

• Editor score
  6.7 / 10
• Pricing
  Free plan
• Best for
  Simple real-time API validation
• Free plan
  Yes
• Paid from
  $19/mo
• Real-time API
  Yes
• Facts checked
  20 Sep 2026

• Where it wins

  • Free tier includes 1,000 requests per month
  • Checks MX, disposable, role, typo, relay, and blocklist signals
  • Examples and integrations for cURL, Node.js, Python, and Go

• Where it doesn't

  • No batch verification
  • Catch-all verification is not included
  • SMTP verification is not included

Our verdict on usecheck

usecheck is an email validation API for developers and product teams that need real-time checks during sign-up, form submission, or other application flows. Authenticated API requests validate email addresses and domains, covering MX records, disposable domains, role accounts, public providers, relays, aliases, spam signals, and common typos. Its positioning fits teams seeking a focused validation layer rather than a broader email operations platform.

Pricing follows a freemium model. The free tier provides 1,000 requests per month. Starter costs $19 per month and is aimed at side projects and small apps, with email support. Pro costs $49 per month for growing products and teams, adding priority email support, while Business costs $150 per month for high-volume applications with priority email support. Enterprise is intended for large-scale infrastructure and includes dedicated support. Paid plans begin at 25,000 requests per month, and plans are based on monthly request volume and rate limits.

Integration coverage is practical for developer-led implementation: usecheck provides examples or integrations for cURL, Node.js, Python, and Go, and supports web and API access. The feature set is strongest for real-time address and domain signals, including disposable and role-account detection, typo suggestions, public-domain detection, relay and alias detection, and spam or blocklist indicators. Teams that require batch processing, catch-all checks, or SMTP verification should choose an alternative. usecheck is a good fit for simple real-time validation in applications, while larger or more specialized email-quality workflows may need broader verification coverage.

Your product? Our editors can test usecheck in depth and publish a review, labelled as paid · from $149/mo →

usecheck pricing

All 4 usecheck plans and prices →

usecheck fact sheet

usecheck integrations

usecheck lists 4 integrations on its own site.

• cURL
• Node.js
• Python
• Go

Alternatives to usecheck

• QQuickEmailVerificationA 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 usecheck alternatives →

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Featured on iTechGuides

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update