Outlook File Format not supported in Workfront Proofing

[#1]

We were trying to implement proofing through workfront. We send .msg file (outlook emails) email proofs to our stakeholders. This outlook file format is not supported in the workfront proofing process. The email proof gets uploaded but it fails in generating the proof (added the error screen shot below). Can we have this .msg file format added as well in the documents to be uploaded.

 

failed to generate proof.jpg ‏39 KB

[#2]

Can you explain what it is that you're proofing?  Generally in our company we are proofing artwork:  PDFs, Logos, Brochures

In what capacity is someone proofing an email?

Can you explain the functionality you are wishing to have?