Hi @Samael Ambrona Rodriguez ,
According to my and research and test, I have found some related Group Policy controls some of the buttons you mentioned.
Go to User Configuration > Administrative Templates > Microsoft Outook 2016 > Outlook Options > Preference > E-mail Options, Unconfigure the "Do not allow attachment preview" to make the option "Turn off Attachment Preview" not greyed out.
Go to User Configuration > Administrative Templates > Microsoft Outook 2016 > Security > Automatic Picture Download Settings, enable the "Display pictures and external content in HTML e-
mail", and "Do not permit download of content from safe zones", the option in picture below will be unchecked and greyed out.
However, I'm afraid there is not a setting for option "Don't download the pictures in encrypted or signed HTML email messages".
Hope above can help you!
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