I am pretty sure, through testing and experience, that the default buttons in Dynamics' email editor does NOT render in Outlook, either consistently or in the 120 DPI Windows Desktop versions. Sometimes the buttons are just not visible. Sometimes the button is visible, but the text is gone. Kind of comical that their own product doesn't render in their own email clients.
Has anyone else experienced this? What have you done to fix the issue consistently. I've tried adding MSO specific code, but Dynamics doesn't like it and overwrites the code.