How to Send an Email Using the Outlook Python API

What Will You Learn?

In this comprehensive tutorial, you will master the art of sending emails using the Outlook Python API. Step-by-step guidance will empower you to efficiently incorporate email-sending capabilities into your Python scripts.

Introduction to the Problem and Solution

Sending emails programmatically is a fundamental requirement for many applications. The Outlook Python API offers a user-friendly approach to automate email dispatch directly from your Python codebase. By harnessing this API, you can seamlessly integrate email functionality into your programs with ease.

To tackle this challenge effectively, the initial step involves authenticating with Microsoft’s servers using the OAuth 2.0 protocol via Azure Active Directory (Azure AD). Once successfully authenticated, you can leverage the Outlook REST APIs to compose and send emails through your Outlook account effortlessly.


# Import necessary libraries
from O365 import Account

# Authenticate with Microsoft Graph
credentials = ('CLIENT_ID', 'CLIENT_SECRET')
account = Account(credentials)
if account.authenticate(scopes=['basic', 'message_all']):

# Compose and send an email
m = account.new_message()'')
m.subject = 'Test Email via Outlook Python API'
m.body = "Hello, this is a test email sent using the Outlook Python API."

# Copyright PHD

(Credit: This code snippet utilizes the O365 library for interacting with Microsoft Graph. For more details about this library, visit


  1. Importing Necessary Libraries: Begin by importing essential libraries.
  2. Authentication: Authenticate with Microsoft Graph by providing client ID and client secret.
  3. Composing Email: Create a new message object, specify recipient, subject, and body of the email.
  4. Sending Email: Call the send() method on the message object to dispatch your email.

This process entails setting up authentication credentials correctly and utilizing methods provided by the O365 library for secure interaction with Outlook services.

  1. How do I obtain my CLIENT_ID and CLIENT_SECRET for authentication?

  2. To acquire your CLIENT_ID and CLIENT_SECRET, register your application in Azure AD as an app under your account.

  3. Can I send attachments along with my emails using the Outlook Python API?

  4. Yes, attachments can be included while composing emails programmatically through O365’s functionalities.

  5. Is it possible to schedule emails at a specific date/time using this approach?

  6. Scheduling emails at specific times isn’t directly supported via this method; additional handling outside basic functionality provided by O365 is required.

  7. Do I need admin consent for accessing mail permissions in Office 365 accounts?

  8. Admin consent may be necessary based on organizational policies when accessing specific mail-related permissions programmatically from Office 365 accounts.

  9. Can I fetch existing emails from my inbox using similar code snippets?

  10. Retrieving messages from your mailbox is feasible by leveraging methods available within O365’s capabilities for reading data.


Mastering automated email-sending tasks through APIs like those offered by Microsoft Graph empowers developers to streamline communication workflows within their applications efficiently. By combining these tools with Python’s versatility, seamless integration across various projects requiring automated messaging capabilities becomes achievable.

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