Python发送邮件

最近一个需求是使用Python自带的smtplib模块发送邮件，以下便是代码部分。

import smtplib
from email.mime.text import MIMEText
from email.header import Header
from email.mime.multipart import MIMEMultipart

def send_mail(title, contents, receivers, path, filename):
    mail_host = "smtp.163.com"  # 设置服务器
    mail_user = "***@163.com"  # 用户名
    mail_pass = "***"  # 口令
    sender = '***@163.com' # 和mail_user保持一致

    # 创建一个带附件的实例
    message = MIMEMultipart()
    message['From'] = sender
    message['To'] = ','.join(receivers)
    message['Cc'] = sender

    subject = 'Python发送邮件'
    message['Subject'] = Header(subject, 'utf-8')

    # 邮件正文内容
    message.attach(MIMEText(contents, 'plain', 'utf-8'))

    # 构造附件
    attach_file = MIMEText(open(path, 'rb').read(), 'base64', 'utf-8')
    attach_file["Content-Type"] = 'application/octet-stream'
    # filename自定义 下面是实现附件可带中文
    attach_file.add_header('Content-Disposition', 'attachment', filename='{}'.format(Header(filename, 'utf-8')))
    # attach_file["Content-Disposition"] = f'attachment; filename={filename}'
    message.attach(attach_file)

    try:
        result = True
        errors = ''
        smtpObj = smtplib.SMTP_SSL(mail_host, 465)
        smtpObj.login(mail_user, mail_pass)
        smtpObj.sendmail(sender, receivers, message.as_string())

    except Exception as error:
        # 捕捉全部异常
        result = False
        errors = error

    return result, errors

代如果不合理请留言指正。