Email should be the same AIP classification or higher classification than the Attachment

Question

Hi All,

I have a requirement of ensuring that an email has the same classification or higher classification than the attachment attached. I was wondering that whether we can achieve this on AIP. (automatically detect a possible AIP classification already included in an attachment and set the classification for the email accordingly)

As an example, if attachment has classified as a confidential, email has to be classified as a confidential too. if email is classified as a public, it won't be sent.

I highly doubt whether we can achieve this using AIP Microsoft or not. so I would appreciate the help!

Thanks,
Dilan