使用Python/Exchangelib请求已读回执？

from exchangelib import Account, Credentials, DELEGATE

credentials = Credentials(username='your_email_address', password='your_password')
account = Account(primary_smtp_address='your_email_address', credentials=credentials, autodiscover=True, access_type=DELEGATE)

message_id = 'your_message_id'

message = account.inbox.get_message_by_id(message_id)
message.is_read = True
message.save()