Hi @Parker Wilson
Of course, you can create a mail subscription and it will send a change notification when you receive a new message.
POST https://graph.microsoft.com/v1.0/subscriptions
Content-type: application/json
{
"changeType": "created",
"notificationUrl": "https://webhook.azurewebsites.net/api/send/myNotifyClient",
"resource": "me/mailFolders('Inbox')/messages",
"expirationDateTime":"2016-11-20T18:23:45.9356913Z",
"clientState": "secretClientValue",
"latestSupportedTlsVersion": "v1_2"
}
Hope this helps.
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