DEFAULT_ATTACHMENT_MIME_TYPE, make_msgid, BadHeaderError and forbid_multi_line_headers into default name space. __all__ is a list of strings, 'CachedDnsName', 'DNS_NAME', 'EmailMessage', 'EmailMultiAlternatives', 'SafeMIMEText',
__all__ = [ 'CachedDnsName' , 'DNS_NAME' , 'EmailMessage' , 'EmailMultiAlternatives' , 'SafeMIMEText' , 'SafeMIMEMultipart' , 'DEFAULT_ATTACHMENT_MIME_TYPE' , 'make_msgid' , 'BadHeaderError' , 'forbid_multi_line_headers' , 'get_connection' , 'send_mail' , 'send_mass_mail' , 'mail_admins' , 'mail_managers' , ]