Could you suggest any affordable django email sending and managing application?
A detailed comparison can be found here: http://www.djangopackages.com/grids/g/email/
You can try to implement this yourself using http://docs.python.org/library/poplib.html and http://docs.python.org/library/smtplib.html#smtp-example , but if you describe which the specific functionality you need, maybe I can offer a ready-made Django application for you.