DKIM Validator API

Overview

To use DKIM Validator, you need an API key. You can get one by creating a free account and visiting your dashboard.

GET Endpoint

https://api.apiverve.com/v1/dkimvalidator

Example

How to call the DKIM Validator API in different programming languages.

curl -X GET \
  "https://api.apiverve.com/v1/dkimvalidator?domain=google.com" \
  -H "X-API-Key: your_api_key_here"

const response = await fetch('https://api.apiverve.com/v1/dkimvalidator?domain=google.com', {
  method: 'GET',
  headers: {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
  }
});

const data = await response.json();
console.log(data);

import requests

headers = {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
}

response = requests.get('https://api.apiverve.com/v1/dkimvalidator?domain=google.com', headers=headers)

data = response.json()
print(data)

package main

import (
    "fmt"
    "io"
    "net/http"

)

func main() {
    req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/dkimvalidator?domain=google.com", nil)

    req.Header.Set("X-API-Key", "your_api_key_here")
    req.Header.Set("Content-Type", "application/json")

    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    body, _ := io.ReadAll(resp.Body)
    fmt.Println(string(body))
}

{
  "status": "ok",
  "error": null,
  "data": {
    "selector": "20230601",
    "host": "google.com",
    "dkim_host": "20230601._domainkey.google.com",
    "cname_target": null,
    "has_dkim_record": true,
    "dkim_record": "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4zd3nfUoLHWFbfoPZzAb8bvjsFIIFsNypweLuPe4M+vAP1YxObFxRnpvLYz7Z+bORKLber5aGmgFF9iaufsH1z0+aw8Qex7uDaafzWoJOM/6lAS5iI0JggZiUkqNpRQLL7H6E7HcvOMC61nJcO4r0PwLDZKwEaCs8gUHiqRn/SS3wqEZX29v/VOUVcI4BjaOz",
    "dkim_records_count": 1,
    "version": "DKIM1",
    "key_type": "rsa",
    "issues_found": [
      {
        "code": "WEAK_PUBLIC_KEY_BITS",
        "type": "warning",
        "message": "Public key uses weak 1416 bits"
      }
    ],
    "valid": true
  }
}

Authentication

The DKIM Validator API requires authentication via API key. Include your API key in the request header:

X-API-Key: your_api_key_here

Learn more about authentication →

Interactive API Playground

Test the DKIM Validator API directly in your browser with live requests and responses.

Parameters

The following parameters are available for the DKIM Validator API:

Response

The DKIM Validator API returns responses in JSON, XML, YAML, and CSV formats. The JSON response is shown in the Example section above; alternative formats below.

Other Response Formats

<?xml version="1.0" encoding="UTF-8"?>
<response>
  <status>ok</status>
  <error xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
  <data>
    <selector>20230601</selector>
    <host>google.com</host>
    <dkim_host>20230601._domainkey.google.com</dkim_host>
    <cname_target xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
    <has_dkim_record>true</has_dkim_record>
    <dkim_record>v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4zd3nfUoLHWFbfoPZzAb8bvjsFIIFsNypweLuPe4M+vAP1YxObFxRnpvLYz7Z+bORKLber5aGmgFF9iaufsH1z0+aw8Qex7uDaafzWoJOM/6lAS5iI0JggZiUkqNpRQLL7H6E7HcvOMC61nJcO4r0PwLDZKwEaCs8gUHiqRn/SS3wqEZX29v/VOUVcI4BjaOz</dkim_record>
    <dkim_records_count>1</dkim_records_count>
    <version>DKIM1</version>
    <key_type>rsa</key_type>
    <issues_found>
      <item>
        <code>WEAK_PUBLIC_KEY_BITS</code>
        <type>warning</type>
        <message>Public key uses weak 1416 bits</message>
      </item>
    </issues_found>
    <valid>true</valid>
  </data>
</response>

status: ok
error: null
data:
  selector: '20230601'
  host: google.com
  dkim_host: 20230601._domainkey.google.com
  cname_target: null
  has_dkim_record: true
  dkim_record: >-
    v=DKIM1; k=rsa;
    p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4zd3nfUoLHWFbfoPZzAb8bvjsFIIFsNypweLuPe4M+vAP1YxObFxRnpvLYz7Z+bORKLber5aGmgFF9iaufsH1z0+aw8Qex7uDaafzWoJOM/6lAS5iI0JggZiUkqNpRQLL7H6E7HcvOMC61nJcO4r0PwLDZKwEaCs8gUHiqRn/SS3wqEZX29v/VOUVcI4BjaOz
  dkim_records_count: 1
  version: DKIM1
  key_type: rsa
  issues_found:
    - code: WEAK_PUBLIC_KEY_BITS
      type: warning
      message: Public key uses weak 1416 bits
  valid: true

Response Structure

All API responses follow a consistent structure with the following fields:

Learn more about response formats →

Response Data Fields

When the request is successful, the data object contains the following fields:

Headers

Only X-API-Key is required. Optional headers include Accept for response format negotiation (JSON, XML, or YAML), User-Agent, and X-Request-ID for request tracing. See all request headers →

GraphQL AccessALPHA

Access DKIM Validator through GraphQL to combine it with other API calls in a single request. Query only the dkim validator data you need with precise field selection, and orchestrate complex data fetching workflows.

Credit Cost: Each API called in your GraphQL query consumes its standard credit cost.

POST https://api.apiverve.com/v1/graphql

query {
  dkimvalidator(
    input: {
      domain: "google.com"
    }
  ) {
    selector
    host
    dkim_host
    cname_target
    has_dkim_record
    dkim_record
    dkim_records_count
    version
    key_type
    issues_found
    valid
  }
}

Note: Authentication is handled via the x-api-key header in your GraphQL request, not as a query parameter.

CORS Support

The DKIM Validator API accepts cross-origin requests from any origin, so it can be called directly from browser-based applications without a proxy. See CORS support →

Rate Limiting

DKIM Validator requests are throttled per minute on the Free plan and unthrottled on paid plans. Exceeding the limit returns 429 Too Many Requests; rate-limit usage is reported in the X-RateLimit-Limit, X-RateLimit-Remaining, and X-RateLimit-Reset response headers. See per-plan limits and best practices →

Error Codes

The DKIM Validator API uses standard HTTP status codes — 200 on success, 400 for invalid parameters, 401 for missing or invalid keys, 403 for insufficient credits, 429 for rate-limit exhaustion, and 500/503 for server-side issues. Each error response includes an X-Request-ID header you can quote when contacting support. See full error handling guide →

SDKs for DKIM Validator

Official DKIM Validator packages on npm, PyPI, NuGet, and JitPack — plus a Postman collection and an OpenAPI spec. See the SDK guide →

JitPack

No-Code Integrations

DKIM Validator works with Zapier, Make, Pipedream, n8n, and Power Automate using the same API key. See setup guides →

Zapier

Make

Pipedream

n8n

Power Automate

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