From mediawiki.org
MediaWiki extensions manual
Release status: unmaintained
Implementation Notify
Description Send textual diffs of page changes inside the notification emails
Author(s) Greg Sabino Mullane (Turnsteptalk)
Latest version 1.9 (2017-11-14)
MediaWiki 1.29+
License MIT License
  • $wgEmailDiffSubjectSuffix
  • $wgEmailDiffCommand
Quarterly downloads 0
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The EmailDiff extension modifies outgoing notification emails by providing a text diff of all changes made. This enables you to see the changes without having to leave your mail client.


  • Download and place the file(s) in a directory called EmailDiff in your extensions/ folder.
  • Add the following code at the bottom of your LocalSettings.php file:
    wfLoadExtension( 'EmailDiff' );
    A new hook will need to be added to the file includes/mail/EmailNotification.php. Inside the function sendPersonalised, right before the "return" line, add:
Hooks::run( 'SendNotificationEmail',
    [ $watchingUser, $this->oldid, $this->title, &$headers, &$this->subject, &$body ] );
  • Yes Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.

Edit the template[edit]

The extension works by replacing the word $PAGEDIFF in the email notification template with the actual diff. Therefore, you will need to edit the MediaWiki:Enotif_body page on your wiki to add that string.

It is recommended that you put some short summary information at the top before the diff. Here is one suggested layout:


Activate for users[edit]

In Preferences -> User profile add a tick in Send a diff of changes

Or activate the extension for all users in LocalSettings.php by adding:

$wgDefaultUserOptions['enotifshowdiff'] = true;

Configuration parameters[edit]

If you need to change these, add them to your LocalSettings.php after the wfLoadExtension command above:

  • $wgEmailDiffSubjectSuffix - String to be added to the end of the subject line. Defaults to (diff)
  • $wgEmailDiffCommand - Command to perform the diff. Seldom needs to be changed from the default.