Email Verifier API

Email Verifier API checks addresses through a browser tool, CSV uploads and a REST API, making it a fit for teams that need both signup screening and list cleanup. Its strongest case is flexible, non-expiring credit use; the main trade-off is buying credits in advance rather than using a recurring plan.

Overview

The service is designed to reduce bounces and protect sender reputation by screening addresses before they enter a mailing list or application workflow. Browser checks and bulk uploads accommodate occasional cleanup, while the API supports real-time validation in a product.

Each definitive Passed or Failed result costs one credit; an unknown catch-all result is not charged. Purchased credits never expire, and purchases do not renew automatically, which suits irregular workloads. Buyers who need a predictable recurring allowance will find this one-time-pack model less convenient.

Key features

Address checks and list cleaning

The engine runs 16 checks, including syntax, SMTP, MX and DNS validation, along with detection for spam traps, disposable addresses, role accounts and catch-all addresses. That scope helps screen more than formatting mistakes alone, although catch-all results can remain unknown. CSV uploads support bulk cleaning, and the service says spreadsheets can be checked in Microsoft Excel and Google Sheets; uploaded CSV files are compatible with HubSpot, Salesforce and Pipedrive.

API and integrations

The REST API accepts GET or POST requests and returns JSON by default, with XML available through an xml parameter. Language guides cover C#, Go, Java, Node.js, PHP, Python, Ruby and Swift, giving developers several implementation paths. Real-time form checks make it relevant for signup flows as well as batch work.

Privacy and security

The service claims ISO 27001 and SOC 2 Type II certification and GDPR and CCPA compliance. Its privacy policy says submitted addresses are purged after checking, SHA512 hashes are deleted after 30 days, and transmission to verification servers uses HTTPS encryption. These safeguards matter for organizations handling contact data, though the claims are the provider's own.

Pricing

The free plan provides 100 verification credits for free, billed One-time, with no credit card required. The browser tool also permits five checks per day without an account. The account credits are the more practical option for ongoing evaluation; one-time billing and non-expiring credits suit users who verify in bursts rather than on a fixed monthly schedule.

Paid packs are one-time purchases: 1,000 credits cost $9.95, paid once ($0.0100 per email); 5,000 cost $34.95, paid once ($0.0070 per email); 10,000 cost $49.95, paid once ($0.0050 per email); 25,000 cost $124.95, paid once ($0.0050 per email); and 50,000 cost $249.95, paid once ($0.0050 per email). For larger workloads, 100,000 credits cost $399.95, paid once ($0.0040 per email), 250,000 cost $749.95, paid once ($0.0030 per email), 500,000 cost $1,499.95, paid once ($0.0030 per email), and 1,000,000 cost $2,499.95, paid once ($0.0025 per email).

The lower packs cost more per email, so they make more sense for small or occasional jobs than sustained high-volume cleaning. Since only definitive outcomes are billed, inconclusive catch-all checks do not consume credits. There is no automatic renewal, but users must buy another pack when they need more credits.

Platforms

Email Verifier API is available through web and API workflows. The web option covers browser checks and CSV uploads; the API supports integration into applications and real-time forms. The Excel and Google Sheets workflows and CSV compatibility with HubSpot, Salesforce and Pipedrive extend its use to teams working in spreadsheets or those CRMs.

Who it's for

Developers building signup validation and businesses cleaning contact lists are the clearest fit. It is particularly suitable for uneven verification volumes, because credits do not expire and unclear catch-all outcomes are not billed. Teams seeking a monthly credit allowance or a guaranteed definitive result for every address should consider whether this pack-based, results-dependent model matches their needs.

Pros and cons

• Pros: One-time credits do not expire or renew automatically, so infrequent users do not have to maintain a subscription.
• Pros: Unknown catch-all results are not billed, limiting charges to definitive Passed and Failed outcomes.
• Pros: Browser, CSV and REST API workflows cover individual checks, bulk cleaning and application integration.
• Cons: The no-account browser tool is capped at five daily checks, and the 100-credit account offer is modest for large lists.
• Cons: Per-email prices fall with larger packs, so small purchases are relatively costly for regular verification.
• Cons: Unknown catch-all results remain unresolved even though they incur no credit charge.

Alternatives

Email Verification Services is the broader directory choice for readers comparing multiple verification products.

VerifyAnyEmail is worth considering if iOS access or a defined free monthly allowance matters: its free plan includes 1,000 credits monthly, 10 requests per minute, batches up to 10 and one concurrent batch, but excludes webhooks and priority support.

emailverifier.dev suits developers looking for REST and MCP access with one API key per project; its free start includes 1,000 credits without a card, and credits do not expire.

MyEmailVerifier is another freemium option with API, extension and web platforms and 100 daily credits without a card.

QuickEmailVerification offers a free tier of 100 credits per day that resets daily, making it an alternative for readers who prefer a refreshed daily allowance.

Reoon Email Verifier offers a lifetime free tier with 20 emails per day, 100 instant credits and both single and bulk verification, including live API validation.

Voila Norbert is another freemium option available through API, extension and web workflows.

ZeroBounce is an alternative with API, iOS and web platforms; its free business account includes 100 monthly email verifications.

DeBounce may suit readers comparing larger pay-as-you-go credit options: its plan spans 5K–5M credits, charges one credit per validation, and credits never expire.

Verdict

Email Verifier API is a strong choice for developers and businesses that need real-time checks alongside bulk list cleaning, especially when verification volumes are irregular. Its non-expiring one-time packs and billing only for definitive outcomes are the clearest reasons to choose it. Look elsewhere if you need an ongoing monthly allowance, or if the per-email cost of smaller packs does not suit your workload.