Go Email Validator API

API ID 13460

Production-ready email validation API built with Go. Detect disposable emails, validate MX records, check domain reputation, WHOIS data, DNS analysis and risk scoring.

911 ms avg response

API Documentation

Endpoints

Request
Validates a single email address and returns full analysis including syntax check, MX record verification, disposable domain detection, typo detection and risk score (0-100).
Endpoint ID: 29470
GET https://www.zylalabs.com/api/13460/go+email+validator+api/29470/validate+email
INPUT PARAMETERS

Validate Email — Endpoint Features

Object Description
email Required Email address to validate (max 254 characters)

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

email
API EXAMPLE RESPONSE
JSON
{
    "success": true,
    "data": {
        "valid": true,
        "block": false,
        "disposable": false,
        "mx_found": true,
        "mx_host": "gmail-smtp-in.l.google.com.",
        "risk": 0,
        "reason": "OK"
    },
    "error": null
}
Validate Email — CODE SNIPPETS

curl --location --request GET 'https://zylalabs.com/api/13460/go+email+validator+api/29470/[email protected]' --header 'Authorization: Bearer YOUR_API_KEY' 


    
Request
Validate multiple emails concurrently using Go goroutines. Returns summary stats and per-email results. Automatically deduplicates emails before processing.
Endpoint ID: 29471
POST https://www.zylalabs.com/api/13460/go+email+validator+api/29471/bulk+validate+emails
INPUT PARAMETERS

Bulk Validate Emails — Endpoint Features

Object Description
Request Body Required Json

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

API EXAMPLE RESPONSE
JSON
{
    "success": true,
    "data": {
        "summary": {
            "total": 3,
            "valid": 2,
            "invalid": 1,
            "risky": 0,
            "duplicates": 0,
            "processing_time_ms": 139
        },
        "results": [
            {
                "email": "[email protected]",
                "valid": true,
                "block": false,
                "disposable": false,
                "mx_found": true,
                "mx_host": "gmail-smtp-in.l.google.com.",
                "risk": 0,
                "reason": "OK"
            },
            {
                "email": "[email protected]",
                "valid": false,
                "block": true,
                "disposable": true,
                "mx_found": true,
                "mx_host": "mail.mailinator.com.",
                "risk": 100,
                "reason": "Disposable domain"
            },
            {
                "email": "[email protected]",
                "valid": true,
                "block": false,
                "disposable": false,
                "mx_found": true,
                "mx_host": "outlook-com.olc.protection.outlook.com.",
                "risk": 0,
                "reason": "OK"
            }
        ]
    },
    "error": null
}
Bulk Validate Emails — CODE SNIPPETS

curl --location --request POST 'https://zylalabs.com/api/13460/go+email+validator+api/29471/bulk+validate+emails' --header 'Authorization: Bearer YOUR_API_KEY' 

--data-raw '{
  "emails": [
    "[email protected]",
    "[email protected]",
    "[email protected]"
  ]
}'

    
Request
Full domain analysis including WHOIS data (age, registrar, expiry, country), DNS records (MX, SPF, DMARC, A records), blacklist check against Spamhaus, SURBL, Barracuda and SpamCop, and risk scoring (0-100).
Endpoint ID: 29472
GET https://www.zylalabs.com/api/13460/go+email+validator+api/29472/validate+domain
INPUT PARAMETERS

Validate Domain — Endpoint Features

Object Description
domain Required Domain name to validate and analyze

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

domain
API EXAMPLE RESPONSE
JSON
{
    "success": true,
    "data": {
        "domain": "gmail.com",
        "valid": true,
        "disposable": false,
        "blacklisted": false,
        "WHOIS": {
            "registrar": "MarkMonitor Inc.",
            "registered_at": "1995-08-13T04:00:00Z",
            "expires_at": "2027-08-12T04:00:00Z",
            "age_days": 11316,
            "country": "US",
            "expired": false
        },
        "DNS": {
            "has_mx": true,
            "has_spf": true,
            "has_dmarc": true,
            "has_a": true,
            "mx_records": [
                "gmail-smtp-in.l.google.com.",
                "alt1.gmail-smtp-in.l.google.com.",
                "alt2.gmail-smtp-in.l.google.com.",
                "alt3.gmail-smtp-in.l.google.com.",
                "alt4.gmail-smtp-in.l.google.com."
            ],
            "spf_record": "v=spf1 redirect=_spf.google.com",
            "dmarc_record": "v=DMARC1; p=none; sp=quarantine; rua=mailto:[email protected]"
        },
        "risk": 0,
        "reason": "OK"
    },
    "error": null
}
Validate Domain — CODE SNIPPETS

curl --location --request GET 'https://zylalabs.com/api/13460/go+email+validator+api/29472/validate+domain?domain=gmail.com' --header 'Authorization: Bearer YOUR_API_KEY' 


    

API Access Key & Authentication

After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the Go Email Validator API simply include your bearer token in the Authorization header.

Headers
Header Description
Authorization Required Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.

No long-term commitment. Upgrade, downgrade, or cancel anytime.

🚀 Enterprise Plan

Starts at
$ 10,000/Year


  • Custom Volume
  • Custom Rate Limit
  • Specialized Customer Support
  • Real-Time API Monitoring

Overview

Production-ready email validation API built with Go. Detect disposable emails, validate MX records, check domain reputation, WHOIS data, DNS analysis and risk scoring.

Go Email Validator API FAQs

Each endpoint returns detailed validation data. The GET Validate Email endpoint provides analysis on a single email, including validity, disposable status, and risk score. The POST Bulk Validate Emails endpoint returns a summary of multiple emails, including counts of valid, invalid, and risky emails, along with individual results. The GET Validate Domain endpoint offers comprehensive domain analysis, including WHOIS data, DNS records, and blacklist status.

Key fields in the response data include "valid" (indicating if the email/domain is valid), "disposable" (whether it's from a disposable provider), "mx_found" (MX record verification), "risk" (risk score from 0-100), and "reason" (explanation for the validation result). For domain validation, additional fields like "WHOIS" and "DNS" provide insights into domain registration and DNS records.

The response data is structured in a JSON format. Each response contains a "success" boolean, a "data" object with relevant details, and an "error" field if applicable. For example, the "data" object in the GET Validate Email response includes fields like "valid," "disposable," and "risk," allowing users to easily access and interpret the validation results.

The GET Validate Email endpoint provides email validity, disposable status, and risk scoring. The POST Bulk Validate Emails endpoint offers a summary of multiple email validations, including counts of valid and invalid emails. The GET Validate Domain endpoint delivers WHOIS data, DNS records, blacklist checks, and risk scoring, giving users a comprehensive view of the domain's reputation and status.

Users can customize requests by specifying the email addresses or domains they wish to validate. For the POST Bulk Validate Emails endpoint, users can submit a list of emails, and the API will automatically deduplicate them before processing. This allows for efficient validation of multiple emails in a single request.

The data sources include DNS records for MX, SPF, and DMARC checks, WHOIS databases for domain registration information, and various blacklist services like Spamhaus and Barracuda. This multi-source approach enhances the accuracy and reliability of the validation results provided by the API.

Typical use cases include validating user sign-ups to prevent fake accounts, ensuring email deliverability for marketing campaigns, and assessing domain reputation for security purposes. Businesses can leverage this data to improve their email communication strategies and reduce risks associated with invalid or disposable emails.

Users can utilize the returned data by analyzing the "valid," "disposable," and "risk" fields to make informed decisions. For instance, if an email is marked as disposable, it may be excluded from marketing lists. The risk score can help prioritize follow-up actions, while WHOIS and DNS data can inform domain-related decisions.

General FAQs

To obtain your API key, first sign in to your account and navigate to the API you want to use. From the API's Pricing section, choose a plan and complete the subscription process. Once subscribed, return to the API page and you will see your API Access Key displayed at the top of the documentation page. You can use this key to authenticate your requests.

You can’t switch APIs during the free trial. If you subscribe to a different API, your trial will end and the new subscription will start as a paid plan.

The free trial lasts for 7 days and allows you to make up to 50 API requests.

No, the free trial is available only once, so we recommend using it on the API that interests you the most. Most of our APIs offer a free trial, but some may not include this option.

Yes. If the API offers a free trial, you will see a "Free 7-Day Trial" option in its Pricing section. The trial lasts for 7 days and allows up to 50 API requests, enabling you to evaluate the API before subscribing to a paid plan.

Zyla API Hub is like a big store for APIs, where you can find thousands of them all in one place. We also offer dedicated support and real-time monitoring of all APIs. Once you sign up, you can pick and choose which APIs you want to use. Just remember, each API needs its own subscription. But if you subscribe to multiple ones, you'll use the same key for all of them, making things easier for you.

Prices are listed in USD (United States Dollar), EUR (Euro), CAD (Canadian Dollar), AUD (Australian Dollar), and GBP (British Pound). We accept all major debit and credit cards. Our payment system uses the latest security technology and is powered by Stripe, one of the world's most reliable payment companies. If you have any trouble paying by card, just contact us at [email protected]

Additionally, if you already have an active subscription in any of these currencies (USD, EUR, CAD, AUD, GBP), that currency will remain for subsequent subscriptions. You can change the currency at any time as long as you don't have any active subscriptions.
The local currency shown on the pricing page is based on the country of your IP address and is provided for reference only. The actual prices are in USD (United States Dollar). When you make a payment, the charge will appear on your card statement in USD, even if you see the equivalent amount in your local currency on our website. This means you cannot pay directly with your local currency.
Occasionally, a bank may decline the charge due to its fraud protection settings. We suggest reaching out to your bank initially to check if they are blocking our charges. Also, you can access the Billing Portal and change the card associated to make the payment. If these does not work and you need further assistance, please contact our team at [email protected]
Prices are determined by a recurring monthly or yearly subscription, depending on the chosen plan.
API calls are deducted from your plan based on successful requests. Each plan comes with a specific number of calls that you can make per month. Only successful calls, indicated by a Status 200 response, will be counted against your total. This ensures that failed or incomplete requests do not impact your monthly quota.
Zyla API Hub works on a recurring monthly subscription system. Your billing cycle will start the day you purchase one of the paid plans, and it will renew the same day of the next month. So be aware to cancel your subscription beforehand if you want to avoid future charges.
To upgrade your current subscription plan, simply go to the pricing page of the API and select the plan you want to upgrade to. The upgrade will be instant, allowing you to immediately enjoy the features of the new plan. Please note that any remaining calls from your previous plan will not be carried over to the new plan, so be aware of this when upgrading. You will be charged the full amount of the new plan.
To check how many API calls you have left for the current month, refer to the 'X-Zyla-API-Calls-Monthly-Remaining' field in the response header. For example, if your plan allows 1,000 requests per month and you've used 100, this field in the response header will indicate 900 remaining calls.

You can monitor your API usage through the response headers included with every request:

x-zyla-api-calls-monthly-used: Shows the total number of API requests you have used during the current billing period.
x-zyla-api-calls-monthly-remaining: Shows the number of API requests you have remaining for the current billing period.

The 'X-Zyla-RateLimit-Reset' header shows the number of seconds until your rate limit resets. This tells you when your request count will start fresh. For example, if it displays 3,600, it means 3,600 seconds are left until the limit resets.

Yes, you can cancel your subscription at any time. Simply go to the Pricing section of the API you're subscribed to and click the "Unsubscribe" button.

Please note that upgrades, downgrades, and cancellations take effect immediately. Once your subscription is canceled, access to the service will end immediately, regardless of any remaining API calls in your quota.

After 7 days, you will be charged the full amount for the plan you were subscribed to during the trial. Therefore, it's important to cancel before the trial period ends. Refund requests for forgetting to cancel on time are not accepted.
When you subscribe to an API free trial, you can make up to 50 API calls. If you wish to make additional API calls beyond this limit, the API will prompt you to perform an "Start Your Paid Plan." You can find the "Start Your Paid Plan" button in your profile under Subscription -> Choose the API you are subscribed to -> Pricing tab.
You can contact us through our chat channel to receive immediate assistance. We are always online from 8 am to 5 pm (EST). If you reach us after that time, we will get back to you as soon as possible. Additionally, you can contact us via email at [email protected]

Please have a look at our Refund Policy: https://zylalabs.com/terms#refund


Related APIs