Author: Paul Holden
MDL-71276 message_email: include alternate email in privacy export.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=8978466354ae7046f5984f90e214a97e5c178e7d
http://github.com/moodle/moodle/commit/8978466354ae7046f5984f90e214a97e5c178e7d
+ 3.11 en [privacy:preference:email,message_email]