CSV email script efficiency
I would suggest to use

with open('emails.csv', "rb") as ifile


see here for details: http://www.python.org/dev/peps/pep-0343/
in this case you don't need to do ifile.close at the end

instead of incrementing rownum by yourself, you can use

for row, rownum in enumerate(reader):


I don't see the reason to do this

br['email_add'] = '%s' % (email) #email address


instead of

br['email_add'] = email