def _mail_format_message(mail_message_tmpl, company, kwds):
    """
    Return the message to be sent to a single company
    :param str mail_message_tmpl: Template for the mail message
    :param obj company: The company object
    :param dict kwds: Additionnal keywords to pass to the string.format method
    """
    kwds['company'] = company
    message = mail_message_tmpl.format(**kwds)
    return message
