In Outlook VSTO development, I would like to know how to obtain the EntryID of the currently replied or forwarded email based on the Outlook.MailItem object of the obtained draft email in the scenario of replying or forwarding a draft email?
I have compared that when viewing emails in the Inspector, the EntryID value can be obtained through the MailItem object, but when replying or forwarding, I don’t know how to get the EntryID of the currently replied/forwarded email?
What I expect is to obtain the EntryID of the currently replied or forwarded email in some way when replying/forwarding a draft email.
I'm hoping someone can answer my question, I'd be grateful!
The Outlook object model doesn't provide such information out of the box. You need to implement the solution where you could track all opened or selected items in Outlook and track for the
ReplyorForwardevents, so you could get the required information from the original item.You may find the Implement a wrapper for inspectors and track item-level events in each inspector article helpful.