How to create an Outlook plugin that shows new folders from a non-exchange hosts

Question

We're looking to create an Outlook COM or Web addin that will display additional folders in the inbox/folders section of outlook. The data will come from a Rest Webservice.

We know its possible since we've seen in a legal application plugin for outlook COM.

The folders inside the red box are from a third party system that contains references to emails within exchange.

Any help would be greatly appreciated.

Answer 1

You can create a store provider in C++ (this is as Extended MAPI as it gets and is certainly not for the faint-hearted or those who had no previous MAPI experience).

Or you can add a PST store to Outlook and sync it with your remote web service.