In the notification email, the previous version of the content is attached in a txt file and html file, as well as the new version.
The other information about the content is also displayed in the email.
You can also add additional people to be notified upon editing content (such as administrators, or other key people in charge of keeping the quality of the content intact).
The plugin will also notify you with a copy of the article before it is deleted completely from the system (which should make it easier to restore something if it is deleted accidentally).
You may call it a poor man's version control system (using email as the storage mechanism) but I think it will work quite nicely for a lot of sites and I hope you enjoy it!
On top of the above, I've also added in some common corrections for content pasted from Microsoft Word, but I'm looking for additional examples of things that could be corrected so if you have those I'd really like to add them in so that your HTML can be cleaned automatically upon submission!
We needed a plugin that would send out notifications to the Admin when an Editor made updates to existing articles. Joomla will send an email to the Admin when new articles were created if "Receive System emails" is checked but not when an article is edited.
We've been using The Content Update Notifications plugin for about a month now and it does just what we need and is working great. I had a couple support questions as well and Omar was quick to reply.
I researched other "update notification" options and this is the best. I give 5 stars for the product, and 5 stars for support.