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Outil Email Port Checker Gratuit

Gratuit

Outil Email Port Checker Gratuit en ligne — analyse instantanée, validation rapide et diagnostic complet sans inscription sur FreeMailTools.com.

Often Blocked
25
Standard SMTPSMTP
None / STARTTLS

The original standard email SMTP port. Mostly used for SMTP relaying between mail servers. Today, almost all consumer ISPs and cloud hosting providers block outbound traffic on port 25 to prevent spam.

Do not use for client submission. Only use for server-to-server relaying if your host permits it.
Recommended
587
Message SubmissionSMTP
STARTTLS

The standard port for SMTP message submission. It ensures that emails are submitted securely using TLS encryption (via the STARTTLS command) and requires proper authentication.

Highly recommended for all modern email clients sending mail to an SMTP server.
465
Secure SMTPSMTPS
Implicit SSL/TLS

Originally registered for SMTPS, then deprecated, and recently revived. It requires an implicit SSL/TLS connection before any SMTP commands are sent.

Use if your application requires implicit SSL/TLS instead of STARTTLS.
Recommended
993
Secure IMAPIMAPS
Implicit SSL/TLS

The standard port for receiving email securely via IMAP. It keeps your email client in sync with the server.

Highly recommended for reading emails.
143
Standard IMAPIMAP
None / STARTTLS

The default unencrypted port for IMAP. While it can be secured with STARTTLS, port 993 is generally preferred.

Avoid unless required by legacy systems.
995
Secure POP3POP3S
Implicit SSL/TLS

The secure port for POP3, which downloads emails to your local device and typically deletes them from the server.

Use if you strictly need POP3 instead of IMAP.
110
Standard POP3POP3
None / STARTTLS

The default unencrypted port for POP3.

Avoid unless required by legacy systems.

Questions Fréquemment Posées

À quoi sert l'outil Outil Email Port Checker Gratuit ?

L'outil Outil Email Port Checker Gratuit vous permet d'effectuer des diagnostics, vérifications et analyses en temps réel pour optimiser la sécurité, la délivrabilité et la configuration de vos emails et DNS.

Cet outil est-il gratuit ?

Oui, tous les outils de FreeMailTools.com sont 100% gratuits, sans inscription requise ni limite quotidienne d'utilisation.

Comment interpréter les résultats ?

Les résultats sont structurés avec des indicateurs d'état clairs (succès, avertissement ou erreur) et des conseils pratiques pour corriger toute anomalie.

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