When using email_list, you get a 'Nothing To Display' message when you have unread mail in your inbox. The configurations are as given in the message.

The problem is related to issues in the code, the most important of which is the roles not getting configured for the user. This seems to be caused by an initialization problem with the array:

line 808: change $rolesnames = array(); to $rolenames = array();

We also needed to make the following change:

in line 1867
return get_records_sql($sql.$wheresql.$groupby.$sortsql, $limitfrom, $limitnum);
to
return get_records_sql($sql.$wheresql.$sortsql, $limitfrom, $limitnum);

I'd also be happy to submit this as a diff if this would be more convenient for you.