> For the complete documentation index, see [llms.txt](https://developer.ultimo.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.ultimo.net/connectors/exchange-online.md).

# Exchange Online

:white\_check\_mark:Professional :white\_check\_mark:Premium :white\_check\_mark:Enterprise

Ultimo offers integration with Exchange Online (as part of Office 365) for specific functionalities:

* Email import
* Custom SMTP

#### Technique

The Microsoft Graph REST API is used to access user mailboxes or authenticating with the SMTP service. To authorise a connection between Ultimo and Exchange Online, OAuth2.0 is used as the authentication method. To make sure that Ultimo is given sufficient access rights, the following pages can be used.

**Ultimo version**

The documentation on this page is applicable to the Rolling Release version of Ultimo (Azure cloud). If you are using an LTS version, contact customer support for documentation related to that version.


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