Email verifier API

Validate email addresses in real-time before sending. Check deliverability, detect catch-all domains, and reduce bounce rates with instant verification.

< 4
s

Avg Response

+ 50

Endpoints

99.9
%

Uptime

1import requests
2
3url = "https://api.linkupapi.com/v1/data/mail/validate"
4
5payload = { "email": "<string>" }
6headers = {
7    "x-api-key": "<x-api-key>",
8    "Content-Type": "application/json"
9}
10
11response = requests.post(url, json=payload, headers=headers)
12
13print(response.json())
1const url = 'https://api.linkupapi.com/v1/data/mail/validate';
2const options = {
3  method: 'POST',
4  headers: {'x-api-key': '<x-api-key>', 'Content-Type': 'application/json'},
5  body: '{"email":"<string>"}'
6};
7
8try {
9  const response = await fetch(url, options);
10  const data = await response.json();
11  console.log(data);
12} catch (error) {
13  console.error(error);
14}
1<?php
2
3$curl = curl_init();
4
5curl_setopt_array($curl, [
6  CURLOPT_URL => "https://api.linkupapi.com/v1/data/mail/validate",
7  CURLOPT_RETURNTRANSFER => true,
8  CURLOPT_ENCODING => "",
9  CURLOPT_MAXREDIRS => 10,
10  CURLOPT_TIMEOUT => 30,
11  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
12  CURLOPT_CUSTOMREQUEST => "POST",
13  CURLOPT_POSTFIELDS => json_encode([
14    'email' => '<string>'
15  ]),
16  CURLOPT_HTTPHEADER => [
17    "Content-Type: application/json",
18    "x-api-key: <x-api-key>"
19  ],
20]);
21
22$response = curl_exec($curl);
23$err = curl_error($curl);
24
25curl_close($curl);
26
27if ($err) {
28  echo "cURL Error #:" . $err;
29} else {
30  echo $response;
31}
1package main
2
3import (
4	"fmt"
5	"strings"
6	"net/http"
7	"io"
8)
9
10func main() {
11
12	url := "https://api.linkupapi.com/v1/data/mail/validate"
13
14	payload := strings.NewReader("{\n  \"email\": \"<string>\"\n}")
15
16	req, _ := http.NewRequest("POST", url, payload)
17
18	req.Header.Add("x-api-key", "<x-api-key>")
19	req.Header.Add("Content-Type", "application/json")
20
21	res, _ := http.DefaultClient.Do(req)
22
23	defer res.Body.Close()
24	body, _ := io.ReadAll(res.Body)
25
26	fmt.Println(res)
27	fmt.Println(string(body))
28
29}
1HttpResponse<String> response = Unirest.post("https://api.linkupapi.com/v1/data/mail/validate")
2  .header("x-api-key", "<x-api-key>")
3  .header("Content-Type", "application/json")
4  .body("{\n  \"email\": \"<string>\"\n}")
5  .asString();

Verify Emails Before You Send

Validate email deliverability in real-time and protect your sender reputation.

The Email Verifier API checks syntax, domain validity, MX records, and mailbox existence to ensure emails reach their destination.

Essential for AI agents and marketing platforms sending high-volume campaigns. Detect disposable addresses, catch-all domains, role-based emails, and potential spam traps before they damage your deliverability.

The API provides detailed verification results including deliverability status, and catchall email.

Reduce bounce rates, improve campaign performance, and maintain clean email lists with instant verification that processes thousands of emails per second.

1{
2  "status": "success",
3  "data": {
4    "email": "elon.musk@tesla.com",
5    "is_valid": true,
6    "is_catch_all": false
7  }
8}

Elon musk

CEO of tesla

  • Email: elon.musk@tesla.com
  • Is catchall: false
  • Is valid: true
  • Email: elon.musk@tesla.com
  • Is catchall: false
  • Is valid: true

Privacy and security with no compromise.

Enterprise-grade security measures ensuring your data remains protected at every step of the process.

Real-Time Processing

Process data instantly without storage, ensuring maximum security and optimal performance for all operations.

Zero-Storage Architecture

Our unique architecture processes data on-the-fly without permanent storage, eliminating potential security vulnerabilities.

Enterprise Compliance

Built-in compliance with GDPR, CCPA, and major industry security standards for comprehensive data protection.

Turn your dream workflow into reality

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LinkupAPI V2 - See what’s new

Launch LinkedIn campaigns, scrape intent signals, and enrich profiles in seconds. All through one powerful API platform.

50
+

Endpoints

99.9
%

Uptime

< 3
s

Avg Response