一、发送邮件的前提是必须开通发件服务器获取对应授权密码。

 二、对应代码如下所示

import smtplib
from email.mime.text import MIMEText
from email.header import Header
 
# 第三方 SMTP 服务
mail_host="smtp.163.com"  #设置服务器
mail_user="liuchunlin202205@163.com"    #用户名
mail_pass="授权密码"   #口令  
 
 
sender = 'liuchunlin202205@163.com'
receivers = ['liuchunlin202205@163.com']  # 接收邮件，可设置为你的QQ邮箱或者其他邮箱 
 
message = MIMEText('Python 邮件发送测试...', 'plain', 'utf-8')
message['From'] = Header("菜鸟教程", 'utf-8')
message['To'] =  Header("测试", 'utf-8')
 
subject = 'Python SMTP 邮件测试'
message['Subject'] = Header(subject, 'utf-8')
 
 
try:
    smtpObj = smtplib.SMTP() 
    smtpObj.connect(mail_host,25)    # 25 为 SMTP 端口号
    smtpObj.login(mail_user,mail_pass)
    smtpObj.sendmail(sender, receivers, message.as_string())
    print ("邮件发送成功")
except smtplib.SMTPException:
    print ("Error: 无法发送邮件")