check your mail config

With SMTPLabs you can check your organizations smtp configuration against best practices.

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secure your email

every major protocol and setting

From MTA-STS to SPF, SMTPLabs covers it all. Check your domain against these industry standards for free.

SPF: Sender Policy Framework is an email authentication method which ensures the sending mail server is authorized to originate mail from the email sender's domain.
MTA-STS: Mail Transfer Agent-Strict Transport Security (MTA-STS) is a mail protocol that encrypts inbound emails with a secure layer.
DKIM: DKIM (DomainKeys Identified Mail) is a protocol that allows an organization to take responsibility for transmitting a message by signing it in a way that mailbox providers can verify.
S/MIME: S/MIME (Secure/Multipurpose internet Mail Extensions) is a widely accepted protocol for sending digitally signed and encrypted messages.