There should be a way to make it watchlist every page, rather than emailing you every single change. You would still get email notifications, but only once for each page unless you've visited it since then.
It should still be optional by an parameter or so to enable mails for every change. There are use cases out there which demand for an notification on every edit.
I used this (
emailallchanges) to enable it for all users of a wiki:
$wgDefaultUserOptions['emailallchanges'] = 1;
This is especially useful for small wikis with sporadic activity and new users once in a while. Cool extension this is!
Can you ask it to send the page instead of the 'Editor's Summary'?
The editor's summary is very useful, but, for me, it's a bit short. I think it's 176 characters.
I understand the reason for having the summary, you don't want thousands of lines.
Is it possible to set some thing to either send the full page in this format - or to do this only when there is a new page?