Email S/MIME encryption Outlook AddIn

Hello,

the Sophos UTM can handle the complete S/MIME encryption. Is there for example also an Outlook Addin, so that the user can decide when he encrypts and when not?

With the SPX encryption of the UTM there is an Outlook Addin, with which the user can control when he encrypts and when not. I would need something like this for the S/MIME encryption of the UTM.
Is there such an AddIn or any other control for the user to decide when to encrypt and when not?


Thank you very much.