Glen's Exchange and Office 365 Dev Blog

Over the years I've created a few different versions of In/Out boards like this that have used Exchange FreeBusy information to present the In/Out status for Users. In this post I am going to look at how you can create the same thing in Microsoft Teams using a Team's tab application that will call some Microsoft Graph endpoints that will first get the members of a particular Team, then there OOF MailTip to determine if they have an AutoResponse set and finally get there userphoto. The end results is a board that looks like this Team's Tab Applications Team's tab apps are very simular to the Add in's framework used across other Office365 products that utilize JavaScript and html to provide a consistent approach across desktop and web clients. However because teams is fairly new the underlying client SDK isn't as feature rich or mature as you would find for example with Exchange/Outlook. Some examples of this is there is no way to get the members of a Team...

MailTip's are a feature in Exchange from 2010 that gives you extra information when sending a message. In a pervious post I showed how you can use these to get the Outlook of Office status for a user using MailTips in EWS. In this Post I have a sample for going through and dumping out all the MailTips for all the Recipients in Exchange (that are feed in using Get-Recipient to include Contacts, Distribution list and any other type of recipeint) and produces an output like      Because there are no classes in the EWS Managed API to use MailTips so I'm just using Raw SOAP to send the MailTips request and then parse the XML result that comes back. With MailTips you can only request a max of 100 results at a time so there is some code to split the request up in batches of 100 if there are more the 100 entries. I've put a download of this script here the script looks like ## Get the Mailbox to Access from the 1st commandline argument $MailboxName = $args [0...

The directory functionality in Exchange Web Services can be a little limited and so within Exchange 2010 without using LDAP to access Active Directory directly there is no direct way to access custom Resource properties on Meeting Rooms or where you want to access Custom Attributes. However using Custom MailTips is one way of working around this issue (although it means duplicating the information). For example to Create a Custom Mail Tip for a mailbox you use set-mailbox meetingRoom2 -MailTip "Expresso Machine" Then in EWS you can use this to retrieve the MailTip GetMailTipsType gmType =  new  GetMailTipsType();   gmType.MailTipsRequested =  new  MailTipTypes();   gmType.MailTipsRequested = MailTipTypes.CustomMailTip;   gmType.Recipients =  new  EmailAddressType[1];   EmailAddressType rcip1 =  new  EmailAddressType();   rcip1.EmailAddress...