[Update] This post was updated on February 18, 2019.

Although prepending special words to emails is definitely easy to achieve natively, it is not possible, using Exchange mail flow rules or Outlook rules, to remove those words automatically from email subject or body when replying or forwarding. If you prepend any keywords to incoming emails like e.g. the word EXTERNAL, to let people know the email originates from the outside of an organization, it will stick to it also in replies and forwards. And this is not what generally the user wants to happen. So if you need to remove any prepended keywords or phrases from email subject or body before the message hits the original sender, you need to either write your own piece of code or use a third party tool like CodeTwo Exchange Rules Pro.

And if code writing is not what makes you enthusiastic, then using CodeTwo Exchange Rules Pro is your option.

Continue reading ‘How to remove keywords from the subject or body of replies on on-premises Exchange?’