How to inline Wiki change as diffs in emails?

Hello,

I've checked the FAQ and searched the Fora, but can't find any hints about how to get email notifications sent after a Wiki page is modified to inline the Wiki diffs in email. I do get notifications with the link to Redmine to see the diff, but that's one extra click and page/tab load that recipients need to do, so I'd like to short-circuit that by inlining the diff.

Can that be done?