Glen's Exchange and Office 365 Dev Blog

There's been a few contact creation scripts popup recently for the Graph API like this as well as a few questions on the forums around this topic lately. None of these examples and questions are taking advantage of using batching in the Microsoft Graph which will give you a significant uplift in performance vs the single request method when creating larger numbers of items and also help you a little around throttling. I've added a new post to my Graph 101 binder  on GitHub that includes an example of doing a CSV Contact import using batching and Service Principal Authentication  https://github.com/gscales/Graph-Powershell-101-Binder/blob/master/Contacts/Batch%20Importing%20Contacts.md   If your interested in a EWS version that can use larger batches (eg 60-100 contacts per request) I've also include an example on GitHub for this  https://github.com/gscales/Powershell-Scripts/blob/master/Graph101/BatchContactCreationEWS.ps1

Out of Office (or automaticRepliesSetting) can be used for a vast number of different applications. For example in this Teams In/Out board   With the Microsoft Graph API there are two ways that can be used to get the automaticRepliesSetting either via the Mailbox setting Endpoint eg https://docs.microsoft.com/en-us/graph/api/resources/automaticrepliessetting?view=graph-rest-1.0 Or you can use MailTips which was the method i used in the Teams Apps eg https://docs.microsoft.com/en-us/graph/api/user-getmailtips?view=graph-rest-1.0&tabs=http eg When it comes to setting the OOF you must use the Mailboxsettings endpoint What is better ? for getting the OOF settings on a large number of users getmailtips because you can request up to 100 users in one request while if your batching Mailboxsetting you can only have a max of 20 user in a single batch. Permission and Authentication  One consideration for the Mailboxsettings endpoint is there is no ability to use Delegate permiss...