python使用exchangelib读取、保存exchange邮件

import os
from datetime import datetime

import pytz
from exchangelib import Credentials, Account, Configuration, DELEGATE, Q, FileAttachment


def received_exchange_message():
    """
    接收exchange邮件，保存邮件到本地
    :return: 
    """
    # 创建连接
    config = Configuration(
        server='exchange.example.com',  # Exchange Web Services URL
        credentials=Credentials('域名\\username', 'password')
    )

    account = Account(
        primary_smtp_address='[email protected]',
        config=config,
        autodiscover=False,
        access_type=DELEGATE
    )

    # 设置时区
    # tz = EWSTimeZone('Asia/Shanghai')
    tz = pytz.timezone('Asia/Shanghai')

    # 过滤收件箱中当天未读邮件，并按照多个主题过滤
    today = datetime.now(tz).date()
    start_of_day = tz.localize(datetime.combine(today, datetime.min.time()))
    end_of_day = tz.localize(datetime.combine(today, datetime.max.time()))

    subject_filter_1 = Q(subject__icontains='主题1')
    subject_filter_2 = Q(subject__icontains='主题2')
    unread_filter = Q(is_read=False) & Q(datetime_received__lte=end_of_day) & Q(datetime_received__gte=start_of_day) & (
            subject_filter_1 | subject_filter_2)

    unread_messages = account.inbox.filter(unread_filter)

    save_path = 'C:\\attachments\\'

    for message in unread_messages:
        print(message.subject)
        print(message.sender.email_address)
        print(message.datetime_received.astimezone())
        print(message.body)

        for attachment in message.attachments:
            if isinstance(attachment, FileAttachment):
                # attachment.download(save_path)
                # attachment.content_location
                # print(f"Attachment saved: {os.path.join(save_path, attachment.name)}")
                file_path = os.path.join(save_path, attachment.name)
                with open(file_path, 'wb') as f:
                    f.write(attachment.content)
                    print(f"Attachment saved: {file_path}")
        # 将邮件设置为已读
        message.is_read = True
        message.save()
        print(f"Marked as read: {message.subject}")

    # 保存邮件到本地，eml格式
    for email in unread_messages:
        # 注意保存时的主题特殊字符等情况的替换，否则会保存失败
        with open(f'{email.subject}.eml', 'wb') as f:
            f.write(email.mime_content)