public async Task <IActionResult> EmailMessage(UsrEmail usrEmail)
        {
            var validateErrors = usrEmail.Validate();

            if (validateErrors == null)
            {
                UsrDataShell result = await _emailOperations.SendEmailAsync(usrEmail);

                if (result.Error == null)
                {
                    return(Ok());
                }
                SetErrorHeaders(result);
            }
            else
            {
                Response.Headers.Add("error", validateErrors);
            }
            return(BadRequest());
        }