🚀 Feature: Add Microsoft Graph Email Provider

[mayurbojappa]

🔖 Feature description

Add a new email provider integration using Microsoft Graph API, enabling users to send emails via Outlook / Office 365 using OAuth authentication instead of SMTP.

🎤 Why is this feature needed ?

Current Microsoft Outlook 365 integration has low limitations on the number of emails sent per minute. There is no such limit on MSGraph.

✌️ How do you aim to achieve this?

• Follow the official Novu docs for adding a new provider:
  https://docs.novu.co/community/add-a-new-provider?utm_campaign=github-contrib
• Create a new email provider module (e.g., MsGraphEmailProvider) under the Email channel.
• Define and validate configuration fields:
  • tenantId
  • clientId
  • clientSecret
  • fromEmail
• Use OAuth 2.0 Client Credentials flow to acquire access tokens from Azure AD.
• Implement the email sending logic via Microsoft Graph API (/sendMail).
• Include provider tests

🔄️ Additional Information

Reference documentation: https://learn.microsoft.com/en-us/graph/api/user-sendmail

Outlook 365 limitations: https://learn.microsoft.com/en-us/office365/servicedescriptions/exchange-online-service-description/exchange-online-limits#sending-limits-1

👀 Have you spent some time to check if this feature request has been raised before?

• I checked and didn't find similar issue

🏢 Have you read the Code of Conduct?

• I have read the Contributing Guidelines

Are you willing to submit PR?

Yes I am willing to submit a PR!

[linear]

NV-6798