APEX_MAIL support on Oracle's free APEX hosting site

Question

Did anybody know the status of APEX_MAIL support on Oracle's free APEX hosting site (http://apex.oracle.com/pls/otn/f?p=....)?
I tested the following 'after submit' process in a testing APEX page without any error message.
begin
APEX_MAIL.SEND (
p_to => 'my_email_address',
p_from => 'my_email_address',
p_body => 'This is a test from APEX form button -- number 5',
p_subj => 'Test Subject ');
end;
But I did not receive the email.

Answer 1

I tried different hotmail and yahoo mail addresses.
If p_to and p_from were the same hotmail email addresses, the emails would be lost.
if p_to and p_from were the same yahoo email addresses, the emails would be received.
This is something caused by hotmail.
The test can be done in SQL commands screen.
APEX_MAIL.PUSH_QUEUE ('localhost',25) did work beautifully.
You could see the message as follows in the SQL commands screen.
Pushing email 4600499720366254834
Pushed email 4600499720366254834
Pushing email 4600892230805594626
Pushed email 4600892230805594626
Pushing email 4600897927845600827
Pushed email 4600897927845600827
Statement processed.