python发送QQ邮箱方法

import smtplib  
from email.mime.text import MIMEText

mail_user = "user1@qq.com"
mail_pwd  = "password"
mailto_list=["user2@qq.com", "user3@qq.com"]

def send_mail(from_address, to_address_list, mail_subject, mail_content):
    msg = MIMEText(mail_content)
    msg["Subject"] = mail_subject
    msg['From'] = from_address
    msg['To'] = ";".join(to_address_list)
    
    s = smtplib.SMTP("smtp.qq.com", timeout=30)#连接smtp邮件服务器,端口默认是25
    #s = smtplib.SMTP_SSL("smtp.qq.com", 465)    #连接方法一
    #s = smtplib.SMTP()    #连接方法二
    #s.connect(mail_host)
    s.login(from_address, mail_pwd)
    s.sendmail(from_address, to_address_list, msg.as_string())
    #s.quit()
    s.close()

send_mail(mail_user, mailto_list, '群发主题', '群发内容')