title: Is System.Net.Mail.SmtpClient.Send synchronous?
body: <p>Considering that SmtpClient has a SendAsync method which I'm not using, is it safe therefore to assume the StmpClient.Send is synchronous? I'm using it to send an email with  temporary file attachment and want to know whether I can delete the temporary attachment immediately afterwards.</p>
  
  <p>Thanks, Rob.</p>