How to color code my external emails in exchange 2010,2016 and Office 365

Hi all, I would like to color code all my external emails coming to my organisation. Am aware that I can do it via Conditional formatting in outlook. But I would like to push it to the entire organisation. is there a way in GPO? do we have any 3rd party tool to do this?  
Please advice.
Tech geekAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Vasil Michev (MVP)Commented:
Not that I know of. There are no GPO setting to control this, and afaik those settings are stored in the mailbox profile, not on the machine, so you cannot copy registry or config files.
Tech geekAuthor Commented:
Hi Vasil thank you for your response. Do we have any third party tool which can do this? or can we do something at the transport rules in the exchange server 2010 or 2016?
Vasil Michev (MVP)Commented:
Transport rules do not offer anything related to this, it's a client-side functionality. Not sure about 3rd party tools., I havent seen any, but you can do a quick lookup in the Office marketplace or google...
David Johnson, CD, MVPOwnerCommented:

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
David Johnson, CD, MVPOwnerCommented:
enough information to confirm an answer
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft Office

From novice to tech pro — start learning today.