Board Thread:Support Requests - Getting Technical/@comment-27606819-20130516180139/@comment-188432-20130519141432

There are three main messages that comprise an email notification:
 * MediaWiki:Enotif subject
 * MediaWiki:Emailuserfooter
 * MediaWiki:Enotif body

That covers messages about changes to articles one is following. However, the least of these messages can vary, depending upon the namespace in which the watched-for change occurs. So there's also:
 * MediaWiki:Enotif body article comment
 * MediaWiki:Enotif body blogpost
 * MediaWiki:Enotif body categoryadd

Each of these also has an HTML variant that you'll probably also want to change:
 * MediaWiki:Enotif body blogpost-HTML, and so forth

There are also about a dozen other "little messages" that you can change, such as the precise words advising someone that there was no edit summary left behind, or the words surrounding the link to check the diff on the edit. For a full list of all possible messages, check out this list

I've just spent a few minutes going around Wikia with that list, and I find that no one has altered any of these messages. So I'm not sure what kind of advice you're actually going to get from people.

I could probably help you figure out how to edit it, but I'd need to know more about what you want to change. The one example you gave doesn't seem possible, however. The link displayed is the link displayed; not sure there's a way to change the link.