ButtonsPlugin - the complete email client integration solution with the installer, tray application and a plug-in for all supported email clients, including 64 bit versions. It shows how to add toolbar and buttons, subscribe to click events, enable-disable and hide buttons, access message store. The sample is written in C#.
ContactsViewVbPlugin - a Vb.Net sample illustrates integration to Contacts View of Windows Live Mail client, and reading contact properties.
EmailEventsVbPlugin - a Vb.Net sample illustrates various Store events. It shows techniques to retrieve details of selected messages. This sample explains how to operate with email store interfaces.