Descripción
King SMTP is a free WordPress SMTP and Email Log plugin. No Pro version, no paywalls — everything is included for free.
Connect WordPress to any SMTP provider or use the built-in KingSMTP integration. Every email your site sends gets logged, searchable, and can be resent with one click.
What this plugin does:
- Connects to any SMTP provider — Gmail, Outlook, SendGrid, Mailgun, or your own server
- Built-in KingSMTP support — send via HTTP API, works even when port 25 is blocked
- Email Log — every sent email is logged with status, recipient, subject and error details
- Search, filter and resend emails directly from your WordPress dashboard
- Failure Alerts — get an email notification when a delivery fails
- Works with WooCommerce, Gravity Forms, Contact Form 7, WPForms, and any plugin that uses wp_mail
- TLS encrypted delivery
Everything is free. No Pro version.
Features like Email Log and Failure Alerts are locked behind a paid upgrade in other plugins. In King SMTP they are included for free.
Optional: KingSMTP provider
KingSMTP is a transactional email service built and maintained since 2017. It supports both SMTP and HTTP API delivery, so it works even when your hosting provider blocks port 25 (common on shared hosting, DigitalOcean, AWS). Buy SMTP with Bitcoin. No KYC required.
Capturas de pantalla
Opciones de configuración para utilizar la API HTTP de Kingmailer
Instalación
Empezar con Kingmailer WordPress SMTP consiste en solo dos pasos: instalar y configurar el plugin. Kingmailer WordPress SMTP está diseñado para funcionar con la funcionalidad `wp_mail` y transmitirá todos los correos electrónicos.
INSTALAR KINGMAILER WORDPRESS SMTP DESDE WORDPRESS
- Visita la página de plugins dentro de tu escritorio y selecciona “Agregar nuevo”;
- Busca “Kingmailer WordPress SMTP”;
- Activa Kingmailer WordPress SMTP desde tu página de plugins;
- Ve a “después de la activación”, a continuación.
INSTALAR KINGMAILER WORDPRESS SMTP MANUALMENTE
- Sube la carpeta “kingmailer-smtp” al directorio “/wp-content/plugins/”;
- Activa el plugin Kingmailer WordPress SMTP a través del menú “Plugins” en WordPress;
- Ve a “después de la activación”, a continuación.
DESPUÉS DE LA ACTIVACIÓN
- Deberías ver el botón “Ajustes”;
- Ve a la página de ajustes y configura el plugin para tu sitio;
- ¡Ya has terminado!
FAQ
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Do I need a KingSMTP account?
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No. You can use any SMTP provider (Gmail, Outlook, your own server, etc.). A KingSMTP account is optional.
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Is the Email Log really free?
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Yes. No Pro version needed.
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Which plugins are compatible?
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Any plugin that uses wp_mail — WooCommerce, Gravity Forms, Contact Form 7, WPForms, Elementor Forms, and more.
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Does it work when port 25 is blocked?
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Yes, if you use KingSMTP — it sends via HTTP API instead of SMTP.
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¿Está cifrada la conexión?
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Yes. TLS encrypted delivery.
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¿Cómo obtengo soporte?
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Email wordpress@kingsmtp.com or reach us on Telegram at @KingSMTPcom.
Reseñas
No hay reseñas para este plugin.
Colaboradores & Desarrolladores
“King SMTP – Email Log & Delivery” es software de código abierto. Las siguientes personas han contribuido a este plugin.
Colaboradores
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Historial de cambios
0.4.3 (2026-03-25)
- New: View details page per email in Email Log (body preview, error details)
- New: Error reason included in failure alert emails
0.4.2 (2026-03-25)
- New: From column added to Email Log
0.4.1 (2026-03-24)
- Fix: Prevent failure alert email loop when delivery fails
- Fix: API timeout capped at 10s to prevent PHP execution time crash
0.4.0 (2026-03-23)
- New: Tabbed admin interface (General, Email Log, Alerts, Test Email, Settings)
- New: Email Log — all sent emails logged with status, search, filter, resend and delete
- New: Failure Alerts — email notification when delivery fails
- New: Multi-provider support — SMTP and KingSMTP selectable from General tab
- New: Safe upgrade routine — existing settings are never lost on update
- Improved: Test Email tab with custom recipient input
0.3.15
- Maintenance release
0.3.10 (2022-06-12)
* Tested with new WP version
0.3.09 (2021-07-31)
* Tested with new WP version
0.3.08 (2021-02-06)
* Corrección de adjunto
= 0.3.07 (2020-12-12)::
* Eliminar la funcionalidad SMTP
0,3,0 (2020-11-28):
* Agregar funcionalidad SMTP
0.2 (2020-11-22):
- Texto actualizado
0.1 (2020-10-17):
- Versión inicial