Particular inbound emails not triggering change notification for subscription created using the Microsoft Graph API

AdamCole-3672 5 Reputation points

We've found that several emails (mostly from various subscribed newsletters) are not triggering change notifications to our specified endpoint. The subscription (to me/messages) is still active and the we receive notifications when sending directly to the inbox using both internal/external email addresses.

Is there a reason why certain messages will trigger a Webhook and others will?

Microsoft Graph
Microsoft Graph
A Microsoft programmability model that exposes REST APIs and client libraries to access data on Microsoft 365 services.
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