that's really cool :) .. I tested now with a mail whole having the Warning message, I press "Show Mail" and it indeed open .. see the pic.
very nice feature indeed.

Thanks a lot Andre ... I believe it's solved.

I disable all Addons (see screenshots) and restarted the Outlook, but still getting the same warning when trying to open the email.

this is what I'm getting when trying to open the mail then the attachment. Am i missing something?

I've installed the Beta version, but issue still exist !!
My encrypted mails are readable by the other party, while I can't read his mail giving the same error msg "Decryption succeeded ......... Note: you cannot be sure who encrypted this message as it is not signed" , while I can read my sent encrypted mails.
see attached.
Any suggestions?

Thanks .. will try it now

Hi Andre,

Thanks Andre for your response..

I tested once more with another person, issue confirmed, he can read my encrypted mail (as you did), however, I can NOT read his emails (with the same error: you cannot be sure who encrypted this message as it is not signed)

Yes, I can decrypt my sent mails, in my Sent folder

I sent the test encrypted email

Thanks once more... and appreciate your swift response.

Thank you for your reply.