How can I determine a new Reply/Forward message's parent MailItem in an Outlook 2010 C#.NET Add-in

I am trying to develop an Add-in for Outlook 2010 that allows me to tag an email using an Outlook.MailItem's UserProperties collection. The fields are loaded from a database configuration and displayed in a task pane for population by the user when composing the email. When someone with the Add-in receives the email they can open it up and view/edit the tagged values in the same task pane.

I also want to populate a reply or forward message spawned from the tagged email with the current values. Unfortunately, I have found no way to determine what Outlook.MailItem the new email originated from. I tried using the newly created email passed to Reply event to find the parent, using the Parent property or GetConversation() method, both of which return null for the newly created item.

So, to summarize: is there a way to d开发者_Go百科etermine the spawning MailItem from which a new Reply or Forward MailItem is generated? If you need any clarification on this issue, let me know.

Thanks, Andrew

I'm currently developing an add-in for Outlook 2007/2010 which makes use of one user-property. I've made the experience that a MailItem with the user property set inherits it when it is forwarded. Have you already looked for the user property/properties in the new e-mail? You can use Outlook Spy from Dmitry Streblechenko to explore them better.