python3实现163邮箱SMTP发送邮件

import smtplib 
from email.header import Header 
from email.mime.text import MIMEText 
 
# 第三方 SMTP 服务 
mail_host = "smtp.163.com" # SMTP服务器 
mail_user = "***"   # 用户名 
mail_pass = "***"  # 授权密码，非登录密码 
 
sender = ***@163.com' # 发件人邮箱(最好写全, 不然会失败) 
receivers = [***@qq.com'] # 接收邮件，可设置为你的QQ邮箱或者其他邮箱 
 
content = '我用Python' 
title = '人生苦短' # 邮件主题 
 
def sendEmail(): 
 
 message = MIMEText(content, 'plain', 'utf-8') # 内容, 格式, 编码 
 message['From'] = "{}".format(sender) 
 message['To'] = ",".join(receivers) 
 message['Subject'] = title 
 
 try: 
 smtpObj = smtplib.SMTP_SSL(mail_host, 465) # 启用SSL发信, 端口一般是465 
 smtpObj.login(mail_user, mail_pass) # 登录验证 
 smtpObj.sendmail(sender, receivers, message.as_string()) # 发送 
 print("mail has been send successfully.") 
 except smtplib.SMTPException as e: 
 print(e) 
 
def send_email2(SMTP_host, from_account, from_passwd, to_account, subject, content): 
 email_client = smtplib.SMTP(SMTP_host) 
 email_client.login(from_account, from_passwd) 
 # create msg 
 msg = MIMEText(content, 'plain', 'utf-8') 
 msg['Subject'] = Header(subject, 'utf-8') # subject 
 msg['From'] = from_account 
 msg['To'] = to_account 
 email_client.sendmail(from_account, to_account, msg.as_string()) 
 
 email_client.quit() 
 
if __name__ == '__main__': 
 sendEmail() 
 # receiver = '***' 
 # send_email2(mail_host, mail_user, mail_pass, receiver, title, content)