Hi @Olivia Mo
Calling the /messages
endpoint does not incur charges. This endpoint is included in the Microsoft 365 subscription, and your users only need to have a Microsoft 365 license.
As for the $0.30 per 1,000 requests fee you mentioned, this only applies to Microsoft Graph Data Connect. Microsoft Graph Data Connect is an advanced feature primarily used for large-scale data extraction and analysis, which is not directly related to the /messages
endpoint.
Hope this helps.
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