---
title: "Microsoft Exchange SMTP OAuth Configuration"
slug: "microsoft-exchange-smtp-oauth-configuration"
updated: 2026-07-09T08:08:24Z
published: 2026-07-09T08:08:24Z
canonical: "help.8x8.com/microsoft-exchange-smtp-oauth-configuration"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.8x8.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Microsoft Exchange SMTP OAuth Configuration

## Objective

8x8 Contact Center has expanded its support for modern authentication (OAuth 2.0) by adding OAuth-based authentication for **outbound SMTP email**. OAuth 2.0 replaces **Basic Authentication**, which Microsoft has deprecated. Please see [Microsoft’s announcement](https://windowsforum.com/threads/microsoft-extends-smtp-auth-basic-auth-deprecation-to-april-2026-what-you-need-to-know.370320/) for details.

> [!WARNING]
> Important
> 
> - This change will not go into effect until **February 16, 2026**.
> - Contact Center Configuration Manager will not display the new features required for this change in **Security > SMTP Servers** until **February 16, 2026**.

While inbound Microsoft 365 email channels have supported OAuth 2.0 for some time, outbound email previously relied on **Basic Authentication**. This enhancement ensures that OAuth 2.0 is now also supported for **outbound SMTP**, fully compliant with Microsoft’s security standards and aligning with Microsoft’s deprecation timeline.

This article explains how administrators can configure OAuth 2.0 specifically for **SMTP Server (outbound)** settings in 8x8 Configuration Manager.

## Applies To

- 8x8 Contact Center
- 8x8 Configuration Manager
- Contact Center Email Interactions
- SMTP Server Settings
- Microsoft 365 OAuth 2.0 Authentication

## Procedure

**Important**: The Microsoft 365 login & consent portion of the **Connect** step below must be completed by a **Microsoft Global Administrator**.

1. In Configuration Manager, navigate to **Security > SMTP Servers**.
2. Select an existing SMTP Server entry or click **Add SMTP Server**.
3. Enter a **Name** for the new SMTP configuration.
  - (Optional) Click the **Default** checkbox to enable this configuration as **Default** for outbound email.
4. In the **Authentication Type** dropdown, select **Microsoft Exchange**. ![OAuth1.png](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/31560?sv=2026-02-06&spr=https&st=2026-11-03T23%3A29%3A36Z&se=2026-11-04T00%3A29%3A36Z&sr=c&sp=r&sig=9q2dguEgRgr0M5dBVzR7hHvfh5zNUoNOP31OEX0rO%2FY%3D)
5. Click **Connect**, and complete the **Microsoft 365** login and consent. The **Account** field will be populated automatically when this step succeeds.![OAuth2.png](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/31561?sv=2026-02-06&spr=https&st=2026-11-03T23%3A29%3A36Z&se=2026-11-04T00%3A29%3A36Z&sr=c&sp=r&sig=9q2dguEgRgr0M5dBVzR7hHvfh5zNUoNOP31OEX0rO%2FY%3D)
6. Click **Test** to confirm the token and permissions are valid.
7. Click **Save** to save your changes. ![OAuth3.png](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/31562?sv=2026-02-06&spr=https&st=2026-11-03T23%3A29%3A36Z&se=2026-11-04T00%3A29%3A36Z&sr=c&sp=r&sig=9q2dguEgRgr0M5dBVzR7hHvfh5zNUoNOP31OEX0rO%2FY%3D)

## Additional Information

For additional guidance, please see the **Support OAuth2 authentication for email channels** section in:

- [8x8 Contact Center for Admins Guide](/documentation/docs/content-support-oauth2-authentication-for-email-channels)