'Subject: So long.\nDear Alice, so long and thanks for all the fish. Sincerely, Bob')

傳送後，發現只有標題而沒有正文。

    # 傳送郵件
    print("請輸入地址的來源：")
    frm = input()
    print("請輸入要傳送郵件的地址：")
    to = input()
    print("請輸入待發送的標題：")
    title = input()
    print("請輸入待發送的正文：")
    mail_body = input()

    message = MIMEText(mail_body, _subtype='plain', _charset='utf-8')
    message['Subject'] = Header(title, charset='utf-8')
    print(smtpObj.sendmail(str(frm), str(to), message.as_string()))