Kickbox Alternative

Developer-First Email Validation API

Kickbox has an API, but MailSafePro offers a better developer experience. Native webhooks, modern SDKs, and comprehensive email validation.

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What It Solves

Kickbox is developer-friendly but limited in features. MailSafePro provides deeper validation (SMTP, MX, disposable detection, breach checking), better accuracy, and enterprise features like webhooks and bulk processing.

Comparison

Feature MailSafePro Kickbox
Accuracy 95%+ (tested) 95%+
Response Time Fast (cached) 1-5s
Free Tier 500/month 100/month
SMTP Verification Starter+ (50/mo free) Limited
Disposable Detection Hobby+ Extra cost
Breach Check (HIBP) Starter+ Not available
DNS Security (SPF/DKIM) Starter+ Not available
Bulk Sync (emails/request) Hobby: 5 | Starter: 100 Limited
Bulk Async (CSV) Professional+: 5,000 | Business: 10,000 Separate product
Webhooks Professional+: 3 | Business: 10 ✅

When MailSafePro is a better fit

  • You need comprehensive validation (SMTP + disposable + breach)
  • Bulk processing is part of your workflow
  • You want all features in one subscription
  • GDPR compliance is required
  • You need webhooks for async processing

When Kickbox might be better

  • You have an existing Kickbox integration
  • You only need basic syntax checking

Quickstart

curl -X POST "https://api.mailsafepro.es/validate/email" \
  -H "X-API-Key: YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"email":"test@example.com","check_smtp":true}'
const res = await fetch("https://api.mailsafepro.es/validate/email", {
  method: "POST",
  headers: { 
    "X-API-Key": process.env.MAILSAFEPRO_API_KEY, 
    "Content-Type": "application/json" 
  },
  body: JSON.stringify({ email: "test@example.com", check_smtp: true })
});
console.log(await res.json());
import os
import requests

response = requests.post(
    "https://api.mailsafepro.es/validate/email",
    headers={"X-API-Key": os.environ["MAILSAFEPRO_API_KEY"]},
    json={"email": "test@example.com", "check_smtp": True},
    timeout=30,
)
print(response.json())
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Preguntas Frecuentes

¿Es difícil migrar desde Kickbox?

Para nada. Si ya usas su API, cambiar a la nuestra te llevará menos de 10 líneas de código. Además, tenemos SDKs listos para usar.

¿Qué verificaciones incluye?

Todas: sintaxis, MX, SMTP, detección de desechables, detección de roles, y comprobación de brechas.

¿Cómo funciona el procesamiento en masa?

Sube tu lista vía API, obtén un job ID, y recibe los resultados por webhook o descarga. Hasta 10,000 emails por trabajo sync, 1M para jobs async Enterprise.

¿Incluye cumplimiento GDPR?

Sí. Procesamos datos con cumplimiento GDPR. Contactanos para DPA.

¿Ofrecéis SDKs?

Sí. Disponemos de SDKs en Python, Node.js, PHP, Ruby, Go, Java y C#.