google app engine - Django Appengine Emails not Arriving -

and thank taking time read question.

i developing site on google appengine using django. send emails via mail.send_mail declared in google.appengine.api.

when run code, dashboard updating amounts of emails sent, i'm not receiving email. have ideas how can track this?

from google.appengine.api import mail 

...

mail.send_mail('xxx@gmail.com', [alert.user.email],                        'promotion alert', 'this message body') 

where xxx@gmail.com email address.

:~) embarrassing!!! when debugged , printed receiving addresses, realized checking wrong email account! sorry have taken time.