I've tracked the changes I made to a Word document. The tracking I used is to underline insertions and to strikethrough deletions. I attached the document to an email, but when I open that copy of the document, the insertions and deletions aren't visible. Instead, there's just a red line in the left hand column of the document to indicate a change.

How do I fix this problem - the email recipient needs to be able to see the actual changes, not just a red line.

Greatly appreciate any help anyone can offer!