from django.conf import settings
import django.core.mail


class MissingConnectionException(Exception):
    pass

def get_connection(label=None, **kwargs):
    if label is None:
        label = getattr(settings, 'EMAIL_CONNECTION_DEFAULT', None)

    try:
        connections = getattr(settings, 'EMAIL_CONNECTIONS')
        options = connections[label]
    except KeyError, AttributeError:
        raise MissingConnectionException(
            'Settings for connection "%s" were not found' % label)

    options.update(kwargs)
    return django.core.mail.get_connection(**options)