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Graph API Occasionally Missing Internet Message Headers in Response

PratikSavla 30 Reputation points
2024-10-22T07:53:56.2066667+00:00

We are using the Microsoft Graph API to retrieve email messages, and according to this article, we should be able to fetch internet message headers using the API.

However, we’ve occasionally noticed that the internetMessageHeaders field is completely missing from the response for certain emails, even though we expect headers to be present. This issue happens intermittently, and we haven’t been able to determine the cause.

Any insights would be greatly appreciated.

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