This is part one of a two part post where I'm going to look at how you can migrate any searches you are doing in EWS to the Graph API. In this first part I'm going to cover SearchFilters (from EWS) and Search-Folders as they have been around the longest and in part 2 I'll look at Searches which has some new functionality in beta in the Graph. Lets start by looking at how you might be doing searches in EWS at the moment Search Filters (restrictions) in a FindItem Request that can be run against a Folder or Search Folder QueryString (KQL) in a FindItem Request that can be run against a Folder or Search Folder SearchFolder with a FindItem Request eDiscovery via SearchMailbox which has now been depreciated in Office 365 and no longer supported Search Filters (Restrictions) If you have used the EWS Managed API to build your application you use the SearchFilter class which creates a underlying restriction in EWS https://docs.microsoft.com/en-us/exchange/client-de...
Pushing the Envelope in Messaging and Office 365 Development