Read M365 emails using the Exchange Web Services API

read_email_ews.py

import requests
from xml.etree import ElementTree as ET

# https://github.com/3gstudent/Homework-of-Python/blob/master/ewsManage.py

# Authentication details
client_id = ''
client_secret = ''
tenant_id = ''
mailbox = '[email protected]'

# Acquire token (similar to the PowerShell script)

# Token request endpoint
token_url = f'https://login.microsoftonline.com/{tenant_id}/oauth2/v2.0/token'

# Token request payload
data = {
    'grant_type': 'client_credentials',
    'client_id': client_id,
    'client_secret': client_secret,
    'scope': 'https://outlook.office365.com/.default'
}

# Requesting the token
response = requests.post(token_url, data=data)
access_token = response.json().get('access_token')

# Function to create SOAP request for FindItem
def create_find_item_soap_request(mailbox):
    return f"""
    <soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                   xmlns:xsd="http://www.w3.org/2001/XMLSchema"
                   xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
                   xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
        <soap:Header>
            <t:RequestServerVersion Version="Exchange2013"/>
            <t:ExchangeImpersonation>
                <t:ConnectingSID>
                    <t:PrimarySmtpAddress>{mailbox}</t:PrimarySmtpAddress>
                </t:ConnectingSID>
            </t:ExchangeImpersonation>
        </soap:Header>
        <soap:Body>
            <FindItem xmlns="http://schemas.microsoft.com/exchange/services/2006/messages"
                      xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types"
                      Traversal="Shallow">
                <ItemShape>
                    <t:BaseShape>IdOnly</t:BaseShape>
                </ItemShape>
                <ParentFolderIds>
                    <t:DistinguishedFolderId Id="inbox"/>
                </ParentFolderIds>
            </FindItem>
        </soap:Body>
    </soap:Envelope>
    """

# Function to create SOAP request for getting emails
def create_get_item_soap_request(item_id, mailbox):
    return f"""
    <soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                   xmlns:xsd="http://www.w3.org/2001/XMLSchema"
                   xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
                   xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
        <soap:Header>
            <t:RequestServerVersion Version="Exchange2013"/>
            <t:ExchangeImpersonation>
                <t:ConnectingSID>
                    <t:PrimarySmtpAddress>{mailbox}</t:PrimarySmtpAddress>
                </t:ConnectingSID>
            </t:ExchangeImpersonation>
        </soap:Header>
        <soap:Body>
            <GetItem xmlns="http://schemas.microsoft.com/exchange/services/2006/messages"
                     xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
                <ItemShape>
                    <t:BaseShape>Default</t:BaseShape>
                    <t:BodyType>Text</t:BodyType>
                </ItemShape>
                <ItemIds>
                    <t:ItemId Id="{item_id}"/>
                </ItemIds>
            </GetItem>
        </soap:Body>
    </soap:Envelope>
    """


# EWS URL
ews_url = "https://outlook.office365.com/EWS/Exchange.asmx"

# Headers
headers = {
    "Authorization": f"Bearer {access_token}",
    "Content-Type": "text/xml; charset=utf-8"
}

# Step 1: FindItem request to get email IDs
find_item_request = create_find_item_soap_request(mailbox)
find_item_response = requests.post(ews_url, headers=headers, data=find_item_request)
find_item_root = ET.fromstring(find_item_response.content)

# Extract ItemIds from FindItem response (update based on actual XML structure)
item_ids = []
for elem in find_item_root.findall('.//{http://schemas.microsoft.com/exchange/services/2006/types}ItemId'):
    item_ids.append(elem.attrib['Id'])

# Step 2: GetItem requests to read emails
for item_id in item_ids:
    get_item_request = create_get_item_soap_request(item_id, mailbox)
    get_item_response = requests.post(ews_url, headers=headers, data=get_item_request)
    get_item_root = ET.fromstring(get_item_response.content)

    # Extract email details from GetItem response (update based on actual XML structure)
    for message in get_item_root.findall('.//{http://schemas.microsoft.com/exchange/services/2006/types}Message'):
        subject = message.find('{http://schemas.microsoft.com/exchange/services/2006/types}Subject').text
        body = message.find('{http://schemas.microsoft.com/exchange/services/2006/types}Body').text
        print(f"Subject: {subject}\nBody: {body}\n")