'Return a dictionary for specific email values, depending on a
partner, or generic to the whole recipients given by mail.email_to.
:param browse_record mail: mail.mail browse_record
:param browse_record partner: specific recipient partner'

@api.multi
def send_get_email_dict(self, partner=None):

    self.ensure_one()
    body = self.send_get_mail_body(partner=partner)
    body_alternative = tools.html2plaintext(body)
    res = {'body': body, 'body_alternative': body_alternative, 'email_to': self.send_get_mail_to(partner=partner)}
    return res
