The scenario is a Teams Group has an email address, and is configured to not forward email to individual group members. We need to be able to find via API the specific message received by the Team G...
Hey there,
For internal messages, you need to work with conversations, as they are not treated as SMTP-borne messages. If the message is coming from outside your tenant then they will delivered to the user's mailboxes in the same way as a 1:1 message, and you can access them with something like https://graph.microsoft.com/v1.0/users/{user_email}/messages?$filter=internetMessageId eq '{internetMessageId}'