确保联系表格电子邮件不会丢失(python)

import os
import smtplib
import email
from email.header import decode_header
from email.utils import parseaddr
from email.parser import Parser
from tencentcloud.common import credential
from tencentcloud.cos.v20180529 import cos_client, models

# 设置您的腾讯云账号信息
secret_id = 'YOUR_SECRET_ID'
secret_key = 'YOUR_SECRET_KEY'
region = 'YOUR_REGION'
bucket = 'YOUR_BUCKET_NAME'

# 设置IMAP邮箱信息
imap_server = 'YOUR_IMAP_SERVER'
imap_username = 'YOUR_IMAP_USERNAME'
imap_password = 'YOUR_IMAP_PASSWORD'

# 设置SMTP邮箱信息
smtp_server = 'YOUR_SMTP_SERVER'
smtp_username = 'YOUR_SMTP_USERNAME'
smtp_password = 'YOUR_SMTP_PASSWORD'

# 创建腾讯云COS客户端
cred = credential.Credential(secret_id, secret_key)
client = cos_client.CosClient(cred, region)

# 登录IMAP邮箱并获取邮件列表
mail = imaplib.IMAP4_SSL(imap_server)
mail.login(imap_username, imap_password)
mail.select('inbox')
status, messages = mail.search(None, 'ALL')
messages = messages[0].split()

# 遍历邮件列表并备份到COS
for msg_id in messages:
    # 获取邮件内容
    _, msg = mail.fetch(msg_id, '(RFC822)')
    msg = email.message_from_bytes(msg[0][1])

    # 解析邮件内容并备份到COS
    for part in msg.walk():
        if part.get_content_type() == 'text/plain':
            body = part.get_payload(decode=True).decode()
            file_name = 'email_backup.txt'
            with open(file_name, 'w') as f:
                f.write(body)
            with open(file_name, 'rb') as f:
                client.upload_file(f, bucket, file_name, part_size=1024 * 1024)

# 登出IMAP邮箱
mail.logout()