Sign outlook email with certificate

To sign an Outlook email with a digital certificate, you'll need to follow these steps:

Prerequisites:

  1. You have a digital certificate installed on your computer. This can be obtained from a trusted Certificate Authority (CA) or your organization's IT department.
  2. Your digital certificate is in a format that Outlook supports, such as a Personal Information Exchange (PFX) file or a Certificate Store (CER) file.
  3. You have Outlook configured to use the digital certificate for signing emails.

Step-by-Step Instructions:

  1. Open Outlook and go to the File menu.
  2. Click on Options and then select Trust Center.
  3. Click on Trust Center Settings.
  4. In the Trust Center, click on Email Security.
  5. Select the option "Use this certificate to sign emails" and choose the digital certificate you want to use from the drop-down menu.
  6. Click OK to save the changes.

Alternative Method:

  1. Open Outlook and go to the Tools menu.
  2. Click on Trust Center.
  3. Click on Email Security.
  4. Select the option "Use this certificate to sign emails" and choose the digital certificate you want to use from the drop-down menu.
  5. Click OK to save the changes.

Verify the Digital Signature:

When you send an email signed with a digital certificate, the recipient can verify the signature using the certificate. To verify the signature, the recipient can:

  1. Open the email and click on the Digital Signature button (usually located in the Security or Details tab).
  2. Click on the "View Details" button to view the certificate details.
  3. Verify the certificate's validity by checking the expiration date, issuer, and subject.

By following these steps, you can sign your Outlook emails with a digital certificate, ensuring the authenticity and integrity of your emails.