python 使用smtplib發送郵件 帶附件 抄送多人等（親測有效）

import os
import smtplib
import base64
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart


class SendEmail(object):
    def __init__(self, username, passwd, recv, title, content,
                 file=None, ssl=False,
                 email_host='smtp.163.com', port=25, ssl_port=465):
        self.username = username  # 用戶名
        self.passwd = passwd  # 授權碼，郵箱第三方登錄授權碼
        self.recv = recv  # 收件人，多個要傳list ['[email protected]','[email protected]]
        self.title = title  # 郵件標題
        self.content = content  # 郵件正文
        self.file = file  # 附件路徑，如果不在當前目錄下，要寫絕對路徑
        self.email_host = email_host  # smtp服務器地址，163的爲smtp.163.com
        self.port = port  # 普通端口
        self.ssl = ssl  # 是否安全鏈接
        self.ssl_port = ssl_port  # 安全鏈接端口

    def send_email(self):
        msg = MIMEMultipart()
        # 發送內容的對象
        if self.file:  # 處理附件的
            file_name = os.path.split(self.file)[-1]  # 只取文件名，不取路徑
            try:
                f = open(self.file, 'rb').read()
            except Exception as e:
                raise Exception('附件打不開！！！！%s' % e)
            else:
                att = MIMEText(f, "base64", "utf-8")
                att["Content-Type"] = 'application/octet-stream'
                # base64.b64encode(file_name.encode()).decode()
                new_file_name = '=?utf-8?b?' + base64.b64encode(file_name.encode()).decode() + '?='
                # 這裏是處理文件名爲中文名的，必須這麼寫
                att["Content-Disposition"] = 'attachment; filename="%s"' % (new_file_name)
                msg.attach(att)
        msg.attach(MIMEText(self.content))  # 郵件正文的內容
        msg['Subject'] = self.title  # 郵件主題
        msg['From'] = self.username  # 發送者賬號
        msg['To'] = ','.join(self.recv)  # 接收者賬號列表
        if self.ssl:
            self.smtp = smtplib.SMTP_SSL(self.email_host, port=self.ssl_port)
        else:
            self.smtp = smtplib.SMTP(self.email_host, port=self.port)
        # 發送郵件服務器的對象
        self.smtp.login(self.username, self.passwd)
        try:
            self.smtp.sendmail(self.username, self.recv, msg.as_string())
            pass
        except Exception as e:
            print('出錯了。。', e)
        else:
            print('發送成功！')
        self.smtp.quit()


if __name__ == '__main__':

    m = SendEmail(
        username='@163.com',
        passwd='',
        recv=[''],
        title='',
        content='測試發送郵件',
        file=r'E:\a.png',
        ssl=True,
    )
    m.send_email()