Email Validation API

Benefits of Email Address Validation API

Real-Time Email Verification

Integrate UniOne email validator API into your sign-up, subscription, or other contact forms to check the users’ email address validity instantly prior to sending any messages to them.

Syntax and Domain Accuracy Checks

UniOne email verification API allows senders to check whether the email address the user enters in the subscription form is working, syntactically correct, and free of any typos.

Protect Your Sender Reputation

Sending campaigns to incorrect or non-existing email addresses lowers your overall deliverability and impacts your sender reputation, and our email checker API helps to avoid such issues.

How an Email API Service Works

Cutting-Edge Validation Algorithms

Contact Form Email Validation

Instant Accurate Results

Cutting-Edge Validation Algorithms

To develop our email validation API, we researched all the best industry verification practices and combined them to provide a flawless experience and accuracy in defining whether a certain email address can receive your message or not.

Contact Form Email Validation

UniOne can power your website or application with means to verify email addresses via API right after visitors enter them into your forms. This way, you can instantly inform users and customers whether they need to double-check the information they’ve entered.

Instant Accurate Results

With UniOne’s email verification API, you will always know if an email address is 100% valid, or if there’s a chance it doesn’t exist or might be a spam trap. We’ll provide you with the validity score and the list of possible issues as to why the specific email address might be considered unreachable.

Key Features of Email Checker API Service

Single email validation

Our email-validation-single API method allows senders to check one email address at a time making it a great option for integration with the subscription forms.

Role detection

With UniOne’s email verifier, you can find out whether the email address belongs to a staff position or to a private person, with a single API request.

RFC grammar rule check

Identify whether the email address has valid syntax or might contain typos with an API-first email validation.

Spam Traps

One cannot reliably determine whether a given email address is a spam trap or not. Still, the UniOne email validator keeps track of the most common cases and will inform you if there’s a match. Note that using double opt-in remains the best option to protect your email lists.

Effortless API Integration with Leading Platforms

UniOne offers a highly-compatible set of APIs, and we’re constantly updating the list of 3rd-party ready-to-use integrations supported. Most of them should cover all the available email validation functionality, however certain options can be missing in some of them, being a recent addition. Feel free to contact us for assistance in adding it to the integration option you need.

Pricing for Email Validation API

All UniOne users can try our email verification features for free on all our trial and paid plans. Plans with up to 50,000 monthly emails are complimented with 100 free monthly validations while higher tiers will power you with 6,000 free validations per month. The price for 1,000 extra email verifications is $2, and you may purchase as much as you need.

Why Choose UniOne

Never Overpay

Enjoy free email validation credits on all available pricing plans and competitive pricing for overage.

Honest Accuracy

We will provide you with all the information regarding the email check results with UniOne API so you can make wise data-driven decisions.

Validity Scores

Based on the data analysis, we’ll give you a clear understanding of whether the email address is safe (with a score of 100), invalid or not reachable (0), or something in between with an estimated chance of successful delivery ranging from 99 to 1.

Comprehensive Compatibility

With the power of email validation API, you can easily embed the email verification functionality into your email address collection forms and validate the subscribers’ contacts on the fly.

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FAQ

What is the accuracy rate of the Email Validation API?

None of the existing email validation solutions can guarantee a 100% accuracy rate in defining whether the email address belongs to the real recipient or not since there are lots of spam traps disguised as commonplace email addresses. Yet, at UniOne, we provide a solid estimate of a successful email delivery.

As a result of an email validation API request, you get the response from UniOne specifying the validity score from 0 to 100, meaning the chance of the email address being functional. When we are absolutely sure the email address is unreachable, we return 0. Based on those results, you can make better decisions of whether to send messages to a certain email address or not.

Is there a maximum number of API requests I can make?

There’s a per-user limit of two API email-validation requests performed simultaneously. Yet, making them sequentially, you’re only limited by the number of email verification credentials given for free with your pricing plan, with additional quota available for $2 for 1,000 validations.

Can I validate emails in bulk using the API?

UniOne’s email validation API solution supports single verification requests only. However, we have reliable partners specializing in bulk email validation, so please feel free to contact us at salesmanager@unione.io to get our recommendations.

Does the API detect disposable or temporary email addresses?

Yes, using the UniOne email verifier via API, the response to your validation request will include the possible reasons of why we believe certain email addresses might be unreachable. These include: “disposable” (for temporary mailboxes), “no_mx_record” (for domains without a mail exchange DNS record), “syntax_error” (for bad syntax), “role” (for corporate role-based addresses), “abuse” (for special-purpose abuse mailboxes), and many other statuses giving you a clearer vision of what those contacts might be like.