Email Validation API
Avoid sending emails to non-valid email addresses with UniOne’s email validation API tool. Integrate it easily and take care of your deliverability and sender reputation by checking the validity of email addresses before adding them to your lists.
Benefits of Email Address Validation API
The Leading Email Validation API Trusted by Thousands
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.
FAQ
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.
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.
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 [email protected] to get our recommendations.
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.
UniOne Email Verifier API: Free Trial with Validation Credits
Try out all UniOne email delivery and email verification API capabilities with a 4-month free trial including 6,000 monthly emails to send and 100 monthly email validations.
