A digital signature or ID is more commonly known as a digital certificate. On the Email Security tab, under Encrypted Mail, select the Add digital signature to outgoing messages check box. Organization details. After purchasing your email certificate, youll be prompted to generate your certificate. Generating the certificate (in Mozilla Firefox). After you fill out the organization details form, youll be sent two emails one with a hash code and one with a link. Exporting your email certificate. In the left pane, select Email Security. Locate the registry key: Enter your first name, last name, email (which you intend to get the certificate for), and select Country.Enter revocation passwordSelect Accept agreement term checkbox.Click NEXT. Outlook starts your web browser and opens a webpage on the Microsoft Office Online website that lists several certification authorities. If available, you can select one of the following options: If you want Select Export Your Digital ID to a file. Click the cert file you downloaded from Comodo website ; Click Install Certificate button ; Keep default settings for all next steps ; Click Finish You Based on my experience, you just need to add the certificate with a few steps in Outlook 2016. Digital certificates are Outlook certificate is a digital certificate that helps to secure emails. Open Outlook. In the new Trust Center window that pops up, select the Email Security section. Begin by creating a new email message in Outlook. Before the message Basically, it is used to sign in to email so that receiver can be sure that upcoming mail is coming from a valid Under Digital IDs, select Import/Export. Under Options, you can toggle the encryption and/or digital signature settings for the message. Select File > Options > Trust Center > Trust Center Settings. You draft the content of the email and attach an Excel spreadsheet. Allow Outlook to use your Install Digital Certificate on your computer. Certificate Under Encrypted e-mail, Click the one that you want to use and follow the Select Start, select Run, type regedit in the Open box, and then select OK. Step 2: Install the certificate on your Outlook server. You hit Send to send the plaintext email from Outlook. In the left pane, click Trust Center. Step 3: After the successful installation, go to the File tab, and click on Options. You'll only see those certificates that you've added to the keychain for your Mac OSX user account and those certificates that are View your certificates On the File tab, click Options. Choose the appropriate email address from the Default Setting dropdown box and select Settings. Under Encrypted email, choose Settings. Outlook 2013. Encrypting with S/MIME Under the File menu, select Options > Trust Center > Trust Center Settings. The S/MIME certificate used by Outlook for iOS and Android is calculated by comparing the user's primary SMTP address as defined in the account profile with the Outlook supports connecting directly to Smart Card Authentication by using a physical smart card or a TPM chip-embedded virtual smart card for each user. Ensure email remains private by encrypting with up to 256-bit security; Digitally sign your email to ensure authenticity and integrity; Trusted with major In Certificate, select the certificate that you want to use. A secure email certificate for Outlook 2016 helps you to fulfill three basic functions: Validates the identity of the sender Encrypts the email while in transit for You create a new email in Outlook. The Secrets of our Secure Email Certificate. Select Email Security. Under Installation Instructions Outlook 2010/2013/2016Go to File. Open Outlook and select the File tab.Access the Trust Center Settings. Select Options > Trust Center > Trust Center Settings.Click on E-mail Security. A new window titled Trust Center will open.Select Settings. Select Choose. Choose your certificate. Enter your password. Click OK. Step 4: A new window named Outlook Options will open up. Choose Select and Click File->Options->Trust Center->Trust Center Settings->Email Security. To digitally sign an Office document, you must have a current (not expired) digital certificate. In the left pane, click Email Security. Adding or Updating an email (S/MIME) certificate in Outlook 365 (2013, 2016, etc.) In the signed message, click on the signature icon in the email header.Click on the Details button.Click on the "Signer:" item in the Security Layers listClick the View Details button.Click the View Certificate button.Click on the Details tab.Click NextClick Finish.Click OK.More In the right pane click Trust Center Settings.