# 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. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://developer.ultimo.net/connectors/exchange-online.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.