Hunter Email Verifier API
The Hunter email verifier API is a complete API that runs validation checks at multiple levels, such as format, domain information, and the response of the mail servers. It offers detailed validation with a confidence score for email addresses.
- Email Address Validation: Supported
- Email Address Verification: Supported
- Free Tier Access: 50 verifications per month
- Pricing: Starts at $49/month for 1000 email verification requests.
- Email Quality Score: Supported
Best Hunter Email Verifier Alternatives
Abstract Email Validation and Verification API
Abstract offers a simple yet powerful API with support for real-time MX and SMTP checks. It also has a smart email typo check and suggestion feature to help in correcting human errors in email address entries. Abstract API is privacy friendly and is compliant with GDPR and CCPA.
- Email Address Validation: Supported
- Email Address Verification: Supported
- Free Tier Access: 100 requests per month, rate limited to one request per second.
- Pricing: Starts at $9/month for 5000 email verification requests, rate limited to 10 requests/second
- Email Quality Score: Supported
Emailable Email Verification API
Emailable claims to be a most complete email checker with a highly secure and developer-friendly email verification API. Emailable also supports a host of solutions for managing emails, such as bulk email verifier and monitoring for professional email address lists.
- Email Address Validation: Supported
- Email Address Verification: Supported
- Free Tier Access: 250 credits
- Pricing: Starts at $30 for 5000 credits
- Email Quality Score: Supported
Mailboxlayer Email Validation and Verification JSON API
Mailboxlayer is a simple email finder API to check for verified email address validation. It is offered as part of the API Layer marketplace.
- Email Address Validation: Supported
- Email Address Verification: Supported
- Free Tier Access: 100 requests/month
- Pricing: Starts at $14.99/month for 5000 requests
- Email Quality Score: Supported
ZeroBounce Real-time Email Verification API
ZeroBounce (sometimes mistaken for Neverbounce) offers a powerful API to validate emails, with Artificial Intelligence (AI) enabled email scoring and blacklist monitoring.
- Email Address Validation: Supported
- Email Address Verification: Supported
- Free Tier Access: 100 requests/month
- Pricing: Starts at $16/month for 2000 requests
- Email Quality Score: Supported
Bouncify Real-Time Email Verification API
Bouncify offers an email verification API to verify lists and supports bulk cleaning of lists, powered by spam traps and anti-greylisting technology.
- Email Address Validation: Supported
- Email Address Verification: Supported
- Free Tier Access: 100 free verifications
- Pricing: Starts at ₹ 1,000 (approx. $12) for 10k requests
- Email Quality Score: Not Supported (but list quality score is supported)
FAQ
What is an email verification API?
An email verification API performs checks on an email address to ascertain whether the email address is genuine, and whether any emails sent to that address are deliverable or not. Many levels of verification can be performed on an email address, such as basic format validation, email domain verification, MX record verification, and more.
Which is the most secure email verification API?
Any email verification API that is hosted on an HTTPS endpoint can be assumed to be secure. But from a privacy point of view, the API service must comply with data privacy laws. Abstract Email Verification and Validation API is a privacy-friendly email verification API that is compliant with GDPR and CCPA. Besides that, it is a feature-rich email verification API with real-time verification checks across domains and MX records.
What are some of the best email verification APIs available?
A good email verification API offers developer-friendly integrations, as well as multi-level email verification options, which go beyond basic format checks. Both Hunter and Abstract Email verification APIs are developer friendly, and good for enterprise-level email verification use cases. If you want a complete solution for bulk email validation and monitoring then Emailable is a good choice. If you are looking for advanced email verification based on artificial intelligence (AI) then ZeroBounce has a good option for that. For simple and cheaper options, you can opt for Mailboxlayer or Bouncify.
Frequently Asked Questions
What is Hunter email verifier and what does it do?
Hunter is an email verification service that validates email addresses through multi-level checks including format validation, MX record lookup, and SMTP server responses. It assigns a confidence score to each address to help predict whether it will actually deliver. The free tier covers 50 verifications per month.
Why would I look for a Hunter email verifier alternative?
Hunter's paid plans start at $49 per month, which is on the higher end compared to alternatives like Abstract ($9/month) or Mailboxlayer ($14.99/month). Teams with large bulk verification needs, tighter budgets, or requirements like GDPR/CCPA compliance may find a better fit elsewhere.
What is the best API alternative to Hunter for developers?
Abstract is a strong developer-friendly alternative: it offers a simple HTTPS JSON endpoint, real-time MX and SMTP checks, and a built-in typo detection feature that suggests corrections for common misspellings. It also has a generous 100 free verifications per month and is GDPR/CCPA compliant.
Which Hunter alternative is best for bulk email list verification?
Emailable is designed specifically for bulk operations and includes list monitoring on top of one-time verification. ZeroBounce is another option with AI-powered scoring and blacklist monitoring, making it well-suited for cleaning large marketing lists before a campaign send.
What technical checks do email verification APIs actually perform?
Most services run four layers of validation: syntax/format checks, domain lookup, MX record verification to confirm the domain can receive email, and an SMTP handshake that pings the mail server without sending a real message. Some providers like ZeroBounce add catch-all detection and spam trap identification on top of these standard checks.
When should I use a real-time email verification API versus batch verification?
Use a real-time API at the point of entry (for example, on a signup form or lead capture page) to reject invalid addresses before they enter your database. Batch verification makes more sense when you already have an existing list you need to clean before an email campaign. Many providers, including Abstract and ZeroBounce, support both modes.

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