About: VSTO for Outlook

API Type:  UI Customization API Interface: .NET Business Logic: Adds features to the Outlook UI and to Outlook processing. Development Languages: .NET, OOM. Property Access: Yes Product Versions: Visual Studio 2005 and later, Office 2003 and later. Summary: Outlook VSTO add-in development allows you to write add-inapplications which will run in Outlook from Office. Points…


About: Messaging APIs

There are many different types of APIs which are focused on mailbox access, administration and care.  There are different ways to approach APIs when looking for one to use for your messaging project.  This article categorizes APIs by type.  Knowing the type of application is needed at the start will help guide you to picking…


OWA Web Parts not working in 2013 – "This content cannot be displayed in a frame"

A while back in 2013 (Cumulative Update 2) there was a change which causes a header called X-Frame-Options to be inserted into rendered OWA pages.  This header tells browsers to not render content in an iFrame.  This is a security feature which is meant to help prevent click-jacking. There is a WebPartsFrameOptionsType setting on VDIR/MailboxPolicy, which…