User blog comment:DaNASCAT/Technical Update: March 4, 2014/@comment-14310002-20140304234702/@comment-11733175-20140305131037

@Starfleet Academy Whilst you maybe unwilling to give out your email address for reasons such as it containing your real name, another option is to create a new gmail account and set it up to forward all emails to your normal email address.

For example, I have  set as my email address in Special:Preferences which forwards all Wikia related email to my normal email address. When Special:EmailUser was disabled, I just updated the links to it on my user page to use that email address instead.