Glen's Exchange and Office 365 Dev Blog

Sometimes particular attachments can create different issues for a number of different reasons so you might find you want to get rid of all those attachments without removing the messages they are attached to. If you find yourself in this situation then this is the sample for you. Firstly to find the attachments of a specific type we use the following AQS query System.Message.AttachmentContents:.pdf This acts as a first level filter but it will give a few false positives so a second client level check of the actual Attachment file name is needed. foreach  ( $Attachment   in   $Item .Attachments)   {                 if ( $Attachment  -is [Microsoft.Exchange.WebServices.Data.FileAttachment]){              if ( $Attachment .Name.Contains( ".pdf" )){          ...

Mail Apps for Outlook (and OWA) is one of the really cool new features of Exchange 2013.Anybody who has every had to do any OWA customization using forms from Exchange 2003 to 2010 would be glad to see they have finally gone past their used by date and Mail Apps provides the promise of a unified custom app framework across mail clients. At RTM the feature set gap compared to currently what you can do in Outlook Plugins and full access to all EWS operations is substantial (and frustrating) and a show stopper for a lot of good application ideas, but hopefully this will narrow somewhat like a lot of Exchange features when we see new bits and pieces come through in the new cumulative updates.  Mail Apps have three main ingredients A manifest file which is what is used to install a Mail App and contains all the configuration and activation rules for the Mail App A html file that is rendered by the Mail client and controls the display elements. JavaScript files that are bascially t...

One of my favorite development utilities is mfcMapi which along with OutlookSpy are invaluable utilities to use when doing any Exchange development. Along with mfcMapi Stephan also has a utility called mrMapi which provides console access to a number of useful MAPI functions . Last week he added a new feature to report on the files sizes and white-space inside a PST or OST based on the Header information in the file http://blogs.msdn.com/b/stephen_griffin/archive/2013/01/28/january-2013-release-of-mfcmapi-and-mrmapi.aspx . I thought this was a really useful thing as it can be a little bit confounding sometimes looking at PST files that have been produced by exporting a Mailbox and comparing that against the actual mailbox size. So I decided to put a script together that would get all the PST and OST file paths for default Outlook profile. Run those filepaths through mrMapi and parse console Output and the put together a HTML report of the information that ended up looking something l...

As I've covered before in this post when you want to access the WellKnowFolders in EWS in a language independent way (eg not having to worry about localization) you can use the WellKnowFoldersName Enumeration in EWS http://msdn.microsoft.com/en-us/library/exchange/microsoft.exchange.webservices.data.wellknownfoldername%28v=exchg.80%29.aspx . Although most of the folderID's are now included in the enumeration one that is missing is the RSS Feeds folder Id.. The Extended property that holds the PR_EntryID for the RSS Feeds Folder is the PidTagAdditionalRenEntryIdsEx extended property on the Non_IPM_Subtree of a mailbox. This Id is held within a PersistData Block which is a structured Binary property that if you want to read in EWS you need to decode (which is fun). So how do you decode this property the first thing you want to do is convert it to Hex String while you could deal with it in the Binary array I find it easier to deal with as a Hex String. $hexVal = [System.BitCo...

I've had a few questions about this in the past week so I thought I would put together a quick sample to show how you can create a new Folder is EWS and set the FolderClass so it appears as a Calendar, Contacts, Tasks, Notes or whatever other folder you want. This is a function so you can just cut and paste it into your own script to use. The full script looks like the following which has samples of using the function at the bottom. ## Get the Mailbox to Access from the 1st commandline argument       $MailboxName  =  $args [0]      ## Load Managed API dll      Add-Type -Path  "C:\Program Files\Microsoft\Exchange\Web Services\1.2\Microsoft.Exchange.WebServices.dll"           ## Set Exchange Version      $ExchangeVersion  = [Micro...

One of the things you may find if your using Archive or Retention policies a lot is that you end up with skeleton folders in your mailbox. Which are basically the old folders trees that are all now empty because the items have been moved to the Archive or aged out of the Mailbox. To see your skeletons you can use the Get-MailboxFolderStatistics cmdlet and something like this to identify user created folders that are empty. get-mailboxfolderstatistics $MailboxName | Where-Object{$_.FolderType -eq "User Created" -band $_.ItemsInFolderAndSubFolders -eq 0} If you want to delete those folders there is no cmdlet to do this so you need to use EWS. Following on from my last post we can take the FolderId from Get-MailboxFolderStatistics convert this Id to a EWSId so we can then bind to the folder in EWS and then delete it using the Delete method. I've put together a sample script to show how to do this by first using the Get-MailboxFolderStatistics and then in EWS ConvertId ...