Glen's Exchange and Office 365 Dev Blog

Skype for Business (and formally Lync before that) uses the Conversation History folder in an Exchange mailbox to store the history of your IM conversations. One message in your mailbox may represent many messages in an IM conversation where the conversation is broken out itself into an XML string in the Message in the "ConversationXml.{CA2F170A-A22B-4f0a-B899-93439DEC3FBC}" extended property which looks something a little bit like this if you dumped its values Which comes from the below underlying MAPI property While Instant Messaging hasn't been around as long as Email the statistics and Reporting on its usage even from third party vendors is pretty underwhelming as the data made available for reporting is limited. If however we take advantage of a Mailbox API like EWS or the Graph API and delve into the above information you can start to produce some more useful statistical reporting about your IM traffic. This could be especially useful at the moment if you w...

One of the features of eDiscovery in Exchange 2013 and greater is the ability to do a search of Mailbox and just return the statistics on particular Items (or searches). This allows you to do a really quick search without the need to process any of the ResultSet of the Search.  To limit the Items types returned by an eDiscovery query you can use the kind Keyword property in a KQL query. The feature set of which has recently been updated https://technet.microsoft.com/en-us/library/dn508399(v=exchg.150).aspx  to now allow you to include Lync (or IM) items. So one little cool thing you can do with this using a multiple OR logic query with eDiscovery is get a quick list of the number of exchange Items by type in a Mailbox eg the KQL for this would look like "kind:email OR kind:meetings OR kind:contacts OR kind:tasks OR kind:notes OR kind:IM OR kind:rssfeeds OR kind:voicemail" and this would produce a report that looks like I've put together a sample of a script to d...