Email address is optional, but is needed for password resets, should you forget your password.
MediaWiki:Prefs-help-email
From MFIWiki
This page has been deleted. The deletion and move log for the page are provided below for reference.
- 09:56, 15 September 2013 Mediawiki default (Talk) deleted page MediaWiki:Prefs-help-email (No longer required)