Python ^hot^ Download Office 365 Email Attachment May 2026

: Use the MSAL library to acquire an OAuth2 access token.

: Assign Mail.Read or Mail.ReadWrite delegated or application permissions.

Downloading Office 365 email attachments with Python can be achieved through several methods, each suited to different environments and security requirements. python download office 365 email attachment

The most modern and robust approach is using the , which offers high security via OAuth2 and works across all operating systems. Alternatively, the O365 library provides a high-level abstraction for the Graph API, while pywin32 is a popular choice for quick scripts running on Windows where Outlook is already installed. 1. Modern Approach: Microsoft Graph API (Recommended)

: Call the /me/messages endpoint to find emails, filtering for those with hasAttachments: true . : Use the MSAL library to acquire an OAuth2 access token

The O365 Python library simplifies the Graph API by wrapping complex requests into intuitive Python objects.

from O365 import Account # Credentials from Azure App Registration credentials = ('client_id', 'client_secret') account = Account(credentials) # Standard OAuth2 authentication flow if account.authenticate(scopes=['basic', 'message_all']): mailbox = account.mailbox() # Get the latest message with an attachment messages = mailbox.get_messages(limit=1, query='hasAttachments eq true') for message in messages: for attachment in message.attachments: attachment.save(location='/path/to/save') Use code with caution. Source: O365 Library on PyPI 3. Windows-Specific: pywin32 The most modern and robust approach is using

: Call the $value endpoint for a specific attachment ID (e.g., .../attachments/{attachment-id}/$value ) to receive the raw file bytes. 2. High-Level Library: The O365 Package