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Outlook uses certificates in cryptographic email messaging to help keep communications secure. You can view your own certificates or those that you receive in email messages.

View your certificates

  1. On the File tab, click Options.

  2. In the left pane, click Trust Center.

    In the right pane click Trust Center Settings.

  3. In the left pane, click Email Security.

  4. Under Encrypted e-mail, click Settings.

  5. Under Certificates and Algorithms, click Choose.

  6. Click the certificate that you want, and then click View Certificate.

View certificates on received messages

  1. In the email message, click Digital signature icon or Encryption icon on the Signed By line.

  2. Click Details.

  3. Click Signer or Encryption Layer, and then click View Details.

  4. To see details about the certificate, click View Certificate.

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