本文共 659 字，大约阅读时间需要 2 分钟。

#coding: utf-8import smtplibfrom email.mime.text import MIMETextfrom email.header import Headersender = 'xxxx@163.com'receiver = 'xxxx@qq.com'subject = '放假通知'smtpserver = 'smtp.163.com'username = ''password = ''msg = MIMEText('大家关好窗户','plain','utf-8')#中文需参数‘utf-8'，单字节字符不需要msg['Subject'] = Header(subject, 'utf-8')msg['From'] = 'Tim
   
    '  msg['To'] = "xxxx@qq.com"smtp = smtplib.SMTP()smtp.connect('smtp.163.com')smtp.login(username, password)smtp.sendmail(sender, receiver, msg.as_string())smtp.quit()
   

只赋值了msg['Subject'], 没有赋值msg['From'], msg['To']，导致出现554情况，更改了后就好了。

注意MIMEText初始化的时候，中文的第二个参数要用'plain'，我用'text',中文就显示不出来。

msg['From'] 中人名为Tim，会和下面对应起来。