Outlook365 EWS streaming notifications | new user first event

Question

I am writing a synchronisation tool which is going to send all the received and sent email messages to our PHP application built in CakePHP. For this I am making use of Streaming Notifications.

Now, for every smtp address I want to listen to I am creating a new service which is going to listen to "created" events in the "Inbox" and "SentItems" folder. I am doing this via an account that has the right to impersonate all these accounts.

The folders and events I'm talking about (C#)

// The folders we want to listen to
FolderId[] folderIds = new FolderId[] {
    WellKnownFolderName.Inbox,
    WellKnownFolderName.SentItems
};
// The event types we want to listen to
EventType[] eventTypes = new EventType[] {
    EventType.Created
};

Also, we are using Outlook365 which can be accessed via https://portal.outlook365.com where I can then login. When I create a new user in the "Outlook365" I can login to that freshly created account.

But, this is where my problem arises. When I start the tool and open my SubscriptionStreamConnection to that smtp address, it immediately triggers an event of the type ItemEvent. So, I am assuming that is a valid event, just like a newly created email message in the inbox and sentitems folder. But this first event does not contain all the data I am asking for and only happens once! The second time I listen to the account the event isn't triggered, so I assume this is some sort of "Create inbox" event, but I am not sure how I can distinguish this from a normal event.

What I am asking for (C#)

PropertySet propSet = new PropertySet(
    BasePropertySet.IdOnly,
    EmailMessageSchema.InternetMessageId,
    // Basic data
    EmailMessageSchema.Subject,
    EmailMessageSchema.UniqueBody,
    EmailMessageSchema.ConversationId,
    EmailMessageSchema.DateTimeReceived,
    EmailMessageSchema.DateTimeSent,
    // Sender and recipient data
    EmailMessageSchema.From,
    EmailMessageSchema.ToRecipients,
    EmailMessageSchema.CcRecipients,
    EmailMessageSchema.BccRecipients
    );

What I am receiving (XML)


  
    
      
    
    
      
        
          
            NoError
            
              
                
                2014-05-13T09:47:44Z
                2014-05-13T09:47:44Z
                
                <11aa@AMXPR07MB104.eurprd07.prod.outlook.com>

Please note: I changed the ID's for the sake of readability, I kept the / in place, just in case they mean something.

As you can see the XML response does not contain all the properties I am asking for, a normal event however (when I send an email to that new account) I do receive a complete response, like this:

  
  
    
      
    
    
      
        
          
            NoError
            
              
                
                My random test!
                2014-05-13T10:25:55Z
                2014-05-13T10:25:38Z
                
                Hello World
                
                  
                    a10 Test
                    a10@mytestdomain.nl
                    SMTP
                    Mailbox
                  
                
                
                  
                    My Name - Company
                    canttell@example.com
                    SMTP
                    OneOff

Of course I can add a simple check if for example the Subject exists in this event, but that doesn't seem right to me.

Just to clarify, some my project "properties" are as follows:

I am connection to outlook365.com
I am making use of C# with the .NET4.5 framework and the latest EWS API
I have one user that can impersonate all other users, so that the program does not need to know all passwords
I add all the ImpersonatedUserId's I want to listen to, each of those impersonated users has their own service (I think this info is obsolete, but it might help you)
In my "OnNotificationEvent" I try to get the Item by it's ID (in a new thread, so that the main program can continue)

This is the code of the method that handles the event:

protected void _OnExchangeNotificationEvent(object sender, NotificationEventArgs args)
{
    StreamingSubscriptionConnection connection = (StreamingSubscriptionConnection)sender;
    StreamingSubscription subscription = args.Subscription;

    // Loop through all item-related events. 
    foreach (NotificationEvent notification in args.Events)
    {
        // if the notification is NOT an item event, skip the event
        if (!(notification is ItemEvent))
        {
            continue;
        }

        // Start a new thread so the main program can continue
        Thread exchangeToCrmThread = new Thread(() => this._handleExchangeEventToCrm((ItemEvent)notification, args));
        exchangeToCrmThread.Start();
    }
}

Note the _handleExchangeEventToCrm method, this methods actually tries to get the EmailMessage (as per PropertySet above).

My question

Just to clarify

Why is a new user triggering an ItemEvent when I am listening to it via a StreamingSubscribtion for the VERY FIRST time? In other words, how can I distinguish a "normal" email sent/received event from any other event which apparently is an "ItemEvent" as well?

I suspect it has to do with "mailbox creation", but I am not sure. Any help is greatly appreciated!

If anything is unclear, please ask so that I can clarify my question

Outlook365 EWS streaming notifications | new user first event

My question

Answers (1)

Related Questions