Read M365 emails using the Microsoft Grapi API

read_email_graph.py

import requests

tenant_id = ''
client_id = ''
client_secret = ''
scope = 'https://graph.microsoft.com/.default'

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

token_data = {
    'grant_type': 'client_credentials',
    'client_id': client_id,
    'client_secret': client_secret,
    'scope': scope
}

token_r = requests.post(token_url, data=token_data)
token = token_r.json().get('access_token')


user_email = 'mauricio@pcontoso.com'  # The email address of the user whose emails you want to read

graph_endpoint = f'https://graph.microsoft.com/v1.0/users/{user_email}/mailFolders/Inbox/messages'

headers = {
    'Authorization': f'Bearer {token}',
    'Content-Type': 'application/json'
}

response = requests.get(graph_endpoint, headers=headers)

if response.status_code == 200:
    messages = response.json().get('value', [])
    for message in messages:
        print(message.get('subject'), message.get('from'))
        body_content = message.get('body', {}).get('content', '')
        #print("Body:", body_content)
else:
    print(f'Error: {response.status_code}')