Frequently Asked Question

S/MIME must be enabled for Outlook for iOS and Android to view or create S/MIME-related content.

End users will need to enable S/MIME functionality manually by accessing their account settings, tapping Security, and tapping the S/MIME control, which is off by default. The Outlook for iOS S/MIME security setting looks like the following:

2^nd , Make sure you have your private certificate installed on your phone:

Manual Certificate Delivery

Outlook for iOS and Outlook for Android both support manual certificate delivery, which is when the certificate is emailed to the user and the user taps on the certificate attachment within the app to initiate the certificate’s installation. The following image shows how manual certificate delivery works in iOS.