Glen's Exchange and Office 365 Dev Blog

One of the scripts that I posted that seems to have a steady stream of input is the EWSContacts Module I put up some time ago. Thanks to  Friedrich Weinmann  who did some recent cleanup of the module on GitHub it is now looking a lot neater. After a recent question from somebody I've made some more changes to the  Export-EXCContactFolder function to allow you to if your exporting a Public Folder or a mailbox's Contacts Folder to recurse any subfolders of that folder you passed in and export those contacts also. When this option is selected a field is added to the CSV to tell you which MailboxFolder (or PublicFolder) the contact was exported from. To use this new feature when exporting contacts from a Public folder just use the recurse switch eg Export-EXCContactFolder -PublicFolderPath "\Office Contacts" -Recurse -MailboxName gscales@datarumble.com -FileName c:\temp\alc2.csv Another parameter I've added is the -RecurseMailbox which will instead of startin...

Pinning email is a new feature that is available in OWA(or Outlook on the Web) on Office365 and Exchange 2016 and a much requested feature in Outlook  https://outlook.uservoice.com/forums/322590-outlook-2016-for-windows/suggestions/12963459-pin-or-stick-important-emails-at-the-top-of-your-I What happens when you pin an Email in OWA is it sets two MAPI properties on the backend when pinned the value will look like the following the value 1/9/4500 is significant and is used when an Item in Pinned in the UI, When the Item is Unpinned in the UI 0x0F01 reverts back the current time and  0x0F02 is removed from the item. So in EWS if you want to display all the Pinned email you can use a SearchFilter to filter the Item based on the value of this property eg  $PR_RenewTime2 = new-object Microsoft.Exchange.WebServices.Data.ExtendedPropertyDefinition(0xF02,[Microsoft.Exchange.WebServices.Data.MapiPropertyType]::SystemTime);  $SfSearchFilter = new-object Microsoft...

As I've been adding new cmdlets to my Exch-REST PowerShell module I've been knocking up against some of the limitations and frustrations of working within a console environment. One of them is if say I find some Messages within a Mailbox which needs further investigation for whatever reason, It good to have an easy way of opening up that message to take a look at the content that isn't normally easy to view in the cmdline like the html body of a message and maybe I want to download any attachments or MessageHeaders without needing to open Outlook or OWA. A number of years ago I created a simple EWS mail client that just acted as a simple Email client using EWS so I decided to port this to the REST API and include it in the Exch-Rest Module. I also broke out two of the winforms from this simple client to enable just reading a particular Message you may have found using any of the other cmldets as well as a simple Form to Send a New Message with or without an Attachment. ...

As I had a few questions about exporting contacts to CSV from both Mailbox and Public folders I've added some new functions to the my EWS contacts module to make this easier.  I've added to new cmdlets the first is Export-ContactsFolderToCSV This will export a contacts folder to CSV's either the default Contacts Folder in a Mailbox or a secondary Contacts folder if you enter in the FolderPath eg to export the Default contacts Folder use Export-ContactsFolderToCSV - MailboxName user@domain.com -FileName c:\exports\contacts.csv To export a Secondary Contacts Folder use Export-ContactsFolderToCSV - MailboxName user@domain.com -FileName c:\exports\contacts.csv -Folder \Contacts\SecondContactsFolder Export-PublicFolderContactsFolderToCSV This will export a Public Contacts Folder to a CSV file to use this use Export-PublicFolderContactsFolderToCSV -MailboxName mailbox@domain.com -FileName c:\exports\PublicFolderexport.csv -PublicFolderPath \folder\folder2\contact...

One of the recurring questions you see asked in Forums around EWS is the ability to see all the Room Mailboxes in Exchange. This is pretty reasonable request that hasn't really had an easy answer in the past there are RoomLists but these required setup and ongoing maintenance and coordination  which can be troublesome. If you where using OnPrem exchange then instead of using EWS you could just use LDAP to lookup Active Directory directly (as well all know AD is the directory service for Exchange) eg back in 2007 I created this http://gsexdev.blogspot.com.au/2007/04/webservice-to-find-room-and-equipment.html . With Office365 you don't have LDAP access to the directory and the Graph API while its good doesn't offer access to the particular property on a User or Directory Object that would allow you to tell if that object has an associated Room (or group or shared mailbox). The good news however is the Graph API  now gives you the ability to pull all the Room Mailbox using f...

When it comes to Messaging API's there no more complex thing then calendaring, not only because most vendors implement things a little differently but Exchange also has a little legacy feature drag because of its length of time in the market place and the difficulties in changing the technology and human interaction with it. The new REST API offers yet another window into calendaring on Office 365 and Exchange 2016 with a major security benefit over its predecessor which is the ability to be able to scope your application access so it can only access the Calendar folders in a Mailbox where previously apps may have needed to have Full Rights or impersonation rights on a Calendar. Also the new REST API allows you to interact with Group Calendars (or Teams Calendar) so leveraging the new REST API to value add to the adoption of these new features can be a worth your while. To Support Calendaring I've added 2 new cmdlets to the Exch-Rest module to handle creating Appointments and...

Outlook and OWA allow you to create "Favorites" shortcuts to Public folders (and other folders for that matter) to make accessing them a faster experience. For those of us keeping pace with grinding Public Folders into dust (personally no longer a fan) and replacing them with Groups, it maybe useful to report on which Public Folders people have Favorited in their mailboxes for a metric and impact point of view. This information should then come in useful if your planing on migrating them (or just for a laugh). Because Public folder hierarchies are relatively complex having the path to the Public folder rather then just the name is generally a lot more useful. So in the script in this blog post we will look at producing a report of the Public Folder favorites and the Path of the Public Folders those shortcuts refer to eg it will produce a report something like the following for each mailbox you where to run it against. Like other mailbox shortcuts these favorites ar...

This is a continuance of my Office365/Exchange 2016 Rest series, in this post I'll be showing how some of the new GUI elements in the Exch-Rest module can help improve the speed and usability of any scripts where you need to browse Mailbox folders. What this modification to the Module does is allows you to enumerate all the Mail Folders in a Mailbox using the REST API and then present a simple folder tree that then allows you to browse through the folder in a Mailbox you might be looking for and when you double click that folder it will then return that as an object that can be piped into further operations. eg the new cmdlet works like Invoke-MailFolderPicker -MailboxName gscales@datarumble.com -AccessToken $AccessToken and visually this is what it looks like I have one extra feature I've added into the module that allows you to return the same folder tree as above with the folder sizes in MB. To do this you need to make sure of the Extended Property ( PR_MESSAGE_SIZE...

In my last post I demonstrated how to rewrite a simple download process script from using EWS to using the new REST API in Office365. This was an example of an Automation process that I first used in the early 2000's as back then email offered a ubiquity for a simple data transfer that even today is hard to do in some enterprises which is why that post has been so popular over the years. In this post I'm going to show you how you can make use of other Office365 endpoints available in the Graph API to basically take this old process and start improving on it. The particular Endpoint I'll be focusing on in this post is OneDrive https://dev.onedrive.com/  (or One Drive for business). I'll also be using my Exch-Rest Module  and taking advantage of all the existing code I've written for the interacting with  Exchange Online to interact with the OneDrive endpoint. And that really is the one great thing about the new Graph Endpoint is that all I'v...

This is a rewrite of one of the more popular EWS posts ( original post ) on my blog about creating a scripted process that would download attachments from an email with a particular subject line in the Inbox and then mark that email read and move it to another folder in the Mailbox. In this post I'm going to go through a direct one to one rewrite of this script and talk about the comparisons between how you used the operations in EWS and now how you can do the same thing using the Graph or Outlook REST API. In another post I'll show an enhanced version that allows you to use the Graph API to save the attachment into another Graph endpoint such as OneDrive or SharePoint. For this script I'm using the Exch-Rest Module I'm currently building which is available on the powershellgallery https://www.powershellgallery.com/packages/Exch-Rest and the source from Github https://github.com/gscales/Exch-Rest . For this script I had to overcome an...

Following on from my previous posts in this series, I've made a number of changes to the Exch-REST PowerShell  module to increase its functionality. The first is that it now supports using either the Microsoft Graph endpoint or the Outlook REST endpoint which has been default so far. If you want to know which endpoint you should use have a look at https://dev.office.com/chooseapiendpoint  . The advantage of utilizing the graph endpoint is that it allows you to hook into all the other Office365 services like Groups,OneDrive,SharePoint, Onenote etc using the same endpoint and token (I'll have some example in future posts). To utilize the graph endpoint is easy all you need to do is add one additional parameter when you create the token to specify you want the AccessToken for the graph eg $Token = Get-AccessToken -MailboxName mailbox@domain.com ` -ClientId 5471030d-f311-4c5d-91ef-74ca885463a7 ` ...

Auto-mapping was a feature that was introduced in Exchange 2010, where when you added Mailbox access permission via Add-MailboxPermission, Outlook would automatically add that Mailbox as an additional Mailbox. Outlook uses Autodiscover to get the information on these mailboxes that are auto mapped via the AlternateMailboxes user setting eg in XML it comes back like the following One thing you can't see easily via the Exchange Managed Shell cmdlet is which ACE's (Access Control Entries) have Automapping enabled on a particular Mailboxes DACL and which don't. You also can't easily see from one mailbox which mailboxes will be auto mapped to it (basically a reverse mapping).So the purpose of this script is to provide both a forward and reverse mapping of Automapping setting for a collection of Mailboxes that are passed into to. It produces a report that look like To get this collection you can either use a CSV file of addresses, Get-Mailbox or just a sta...

This is part 4 of my ongoing series for using the new REST API in Office365 and Exchange 2016. To make the module I created in previous posts a little more easier to use and open it up for other people to contribute to, I've published the module to the PowerShell Gallery  and a new GitHub repository for contribution here  https://github.com/gscales/Exch-Rest . So to install the latest version of the module from the PowerShell gallery on Windows 10 you just need to use Install-Module Exch-Rest which will pull the latest version down from the Gallery then Import-Module Exch-Rest to load the module (For Windows 8.1 see http://go.microsoft.com/fwlink/?LinkID=746217&clcid=0x409 ) I've changed the authentication functions to allow you to pass in the ClientId, TenantId and RedirectURL to make it easier to use rather then having to use static variables. The documentation still needs a lot of work. New functions I've added recently Get-UserPhotoMetaData...

In Part 1 of this continuing series I looked at the basics of accessing a Mailbox using the new REST api in PowerShell with Exchange and in Part 2 accessing all the mailboxes in a tenant as an Administrative application using Certificate authentication. In this installment I've expanded the REST PowerShell module to encompass most of the common data operations like enumerating Folder and Items. Getting a folder from Path A common thing you might want to do with a script that accesses a Mailbox is access a non default folder eg say a folder that a user or application has created in the Inbox. To access a folder with the REST api you need to first know the Id of that particular folder. With the WellKnownFolders in a Mailbox you can use the constants such as Inbox,SentItems etc but for non default folders you need some code that will first find the Id of the Folder by searching for the folder in question in each of the parent folders. I've added a function in the Rest modul...