How to Revoke Access to an Encrypted Email in Outlook
Using the XQ Outlook Add-In, you can revoke access to previously sent messages. Revoking a message makes the message permanently unreadable for you and all recipients.
Refer to the following steps to revoke access to an encrypted email in Outlook:
Step 1: Open Outlook and navigate to your Sent Mail folder. Click on the email you would like to revoke access to.
Step 2: On the email message, click on the XQ icon in the menu bar and select the Read with XQ option from the dropdown menu.
Step 3: Click on the Revoke Message icon and select Revoke on the pop-up window.