pythonによるメール送信

import smtplib
from email.mime.text import MIMEText
#      
mailto_list = ['[email protected]']
#      
mail_host = 'smtp.qq.com'
mail_user = 'xxx'   #    
mail_pass = 'xxx'   #   
mail_postfix = 'qq.com' #      
# to_list：   ; sub:  ; mail_user:   ; content:    
def send_mail(to_list, sub, mail_user, mail_postfix,content):
    me = 'yourname'+''
    #       
    msg = MIMEText(content, _subtype='html', _charset='gb2312')
    msg['Subject'] = sub
    msg['From'] = me
    msg['To'] = ';'.join(to_list)
    s = smtplib.SMTP()
    s.connect(mail_host)    #   smtp   
    s.login(mail_user, mail_pass)   #      
    s.sendmail(me, to_list, msg.as_string())    #     
    s.close()

content = 'python test mail'
sub = 'test'
send_mail(mailto_list, sub, mail_user, mail_postfix, content)