Free email security check

Is your domain set up to send email safely?

Type a domain and get an answer in plain English. We check the public records that your email security depends on — nothing is sent and nothing is changed.

• Can people email you?

  MX

• Are approved senders listed?

  SPF

• Are messages signed?

  DKIM

• Is spoofing protection on?

  DMARC

• Is mail transport protected?

  MTA-STS

• Can problems be reported?

  TLS-RPT