import smtplib from email.mime.text import MIMEText s = smtplib.SMTP('smtp.uk.xensource.com') s.set_debuglevel(1) msg = MIMEText("""body""") sender = 'me@example.com' recipients = ['john.doe@example.com', 'john.smith@example.co.uk'] msg['Subject'] = "subject line" msg['From'] = sender msg['To'] = ", ".join(recipients) s.sendmail(sender, recipients, msg.as_string())