Redmine

I have problem with User:

User user=issue.getAssignee();
String name=user.getFirstName();        // name has correct value
String email=user.getMail();            // email==null :(

In my user bean only name field and last name field have initialized values. Rest values = null.
(Email address for this account is set)

Have you any ideas what is wrong?

I need get email addresses for notify.