E-Mail-Validierung API & kostenloser E-Mail-Checker

curl "https://api.emailvalidation.io/v1/info?email=support@emailvalidation.io" \
  -H "apikey: IHR-API-KEY"

const res = await fetch(
  "https://api.emailvalidation.io/v1/info?email=" + encodeURIComponent(email),
  { headers: { apikey: process.env.EMAILVALIDATION_KEY } }
);
const { state, did_you_mean } = await res.json();
if (state === "undeliverable") {
  // Nutzer bitten, die Adresse zu korrigieren, ggf. mit did_you_mean als Vorschlag
}

import os, requests

r = requests.get(
    "https://api.emailvalidation.io/v1/info",
    params={"email": email},
    headers={"apikey": os.environ["EMAILVALIDATION_KEY"]},
    timeout=35,
)
state = r.json()["state"]  # deliverable | undeliverable | unknown

$ch = curl_init("https://api.emailvalidation.io/v1/info?email=" . urlencode($email));
curl_setopt($ch, CURLOPT_HTTPHEADER, ["apikey: IHR-API-KEY"]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$result = json_decode(curl_exec($ch), true);

{
  "email": "support@emailvalidation.io",
  "user": "support",
  "tag": "",
  "domain": "emailvalidation.io",
  "format_valid": true,
  "mx_found": true,
  "smtp_check": true,
  "catch_all": null,
  "role": true,
  "disposable": false,
  "free": false,
  "score": 0.64,
  "state": "deliverable",
  "reason": "low_quality",
  "did_you_mean": "",
  "catch_all_resolution": null,
  "bounce_probability": null,
  "status": "valid",
  "sub_status": "role_based",
  "explanation": "The mailbox exists, but it is a role address (such as info@ or support@), usually read by a team rather than one person.",
  "recommended_action": "send_with_caution"
}