I am using Odoo v10. And I am trying to send email notification from python code. email_to attribute is working fine. I want to send Bcc along with email. Following is my code where email_to is still working but email_bcc is not working.

            mail_values = {
                'email_from': self.env.user.email,
                'email_to': manager_email,
                'email_bcc': 'mymail@mydomain.com',
                'subject': subject,
                'body_html': body,
                'state': 'outgoing',
                'type': 'email',
            }

            mail_id = mail_mail.create(mail_values)
            mail_id.send()

Let me know if further information is required. Thanks