How to decrypt and un-sign a message programmatically using the OOM

Overview This blog post demonstrates how to decrypt and un-sign a message programmatically using the Outlook Object Model.   Encrypt email messages When you need to protect the privacy of an email message, encrypt it. Encrypting an email message in Outlook means it’s converted from readable in plain text into scrambled cipher text. Only the…


Outlook’s slow add-ins resiliency logic and how to always enable slow add-ins

Overview This post explains how to deploy registry settings that would force Outlook to always load a specific add-in. The information in this post only applies to slow (VSTO) add-ins in Outlook 2013 or higher.  If Outlook disables your add-in to prevent a crash, this blog post isn’t for you. Disclaimer Outlook natively allows add-ins…

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Outlook add-in sample – implementing additional controls for capturing meeting notes

I’ve written a VSTO add-in sample that implements a form region with a rich text control that allows capturing rich text notes and additional information for appointments and meetings. How it works The add-in implements the form region displayed in the screenshot below for compose-mode meetings. Upon saving the appointment or meeting invite the content…

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