Your smartcard may also require a PIN to access the certificate. If your certificate is stored on a smartcard, you will be prompted to insert the smartcard to digitally sign the message. Select or deselect Digitally sign this message (S/MIME). To add or remove a digital signature from a message that you’re composing: How do I digitally sign individual messages? You can then send the message anyway, remove those recipients, or retry to check again. If you encrypt an outgoing message and Outlook Web App can’t verify that all recipients can decrypt the message, you’ll see a notice warning you which recipients may not be able to read the encrypted message. Select or deselect Encrypt this message (S/MIME). Go to the top of the message and select more options > Message options. To add or remove digital encryption from an individual message that you’re composing: Note: All outgoing messages include new messages, replies, and forwards. You may be prompted again to verify that you want to run the software.

When you’re prompted to run or save the file, select Run. You will then be prompted to install the S/MIME control. Alternatively, if you do not have the S/MIME control installed, you can create a new message and select more options > Message options and select Encrypt this message (S/MIME).

If you do not have the S/MIME control installed, and receive an encrypted or digitally signed message, you’ll be prompted to install the control when you open the message. Follow the instructions provided by your administrator to use your certificate. Your certificate may be stored on a smart card, or may be a file that you store on your computer. The first step to use S/MIME is to obtain a certificate, also called a digital ID, from your organization’s administrator. How do I verify the signature of a digitally signed message? Reading encrypted and digitally signed messages How do I encrypt or digitally sign all messages?

In this articleĮncrypt and digitally sign outgoing messages Note: S/MIME may not be available for your account.

Encrypting emails in outlook