University of Helsinki
Moodle users have the opportunity to edit their profile setting on to whom the email address will be displayed. The default and recommended value for the setting Email display is Allow only other course members to see my email address. Users may also change the value to Hide my email address from everyone.
If you have hidden your email address from everyone, please note that the address is not used even in the email messages sent from Moodle, where the most typical case is subscription of discussion forum messages. Instead, Moodle displays a noreply email address with reminder “Do not reply to this email” as the from and reply-to address in all your messages. This means that no-one can reply by email to you to any message you have written; instead the replies end up in an administrative trash folder.
Instructions for checking your profile settings can be found in English at http://docs.moodle.org/23/en/Update_profile and Student guide, Chapter 6, and in Finnish in the Teacher guide at Omat asetukset (My settings).