python3利用163邮箱发送邮件

# -*-coding:utf-8-*-
import smtplib
from email.mime.text import MIMEText
from email.header import Header
SMTPserver="smtp.163.com"
Sender="你的账号@163.com"
password="你的密码"
#类容
tet="我是一只小小鸟"
print (tet)
msg=MIMEText(tet, 'plain', 'utf-8')
#标题
msg["Subject"]=Header(u'大哥好', 'utf-8').encode()
#发件人
msg["From"]=Sender
#收件人
msg["to"]="[email protected]"

mailserver=smtplib.SMTP(SMTPserver,25)
#登录邮箱
mailserver.login(Sender,password)
#发送邮件
mailserver.sendmail(Sender,["[email protected]"],msg.as_string())
mailserver.quit()
print ("over")