none
Hidden user properties RRS feed

  • Question

  • Hi,

    We would like to have some sort of hidden property attached to an email that can be set by the add-in of the sender, and then read by the add-in of the recipient.

    Is there anything that can survive going through Exchange, and still be there after the user clicks reply? It does not need to work externally.

    Unfortunately it seems clicking 'reply' destroys the user property set.

    Thanks

    Thursday, November 13, 2014 9:37 PM

Answers

  • No user property, and no Extended MAPI property in general survives a reply/forward.

    The best you can do is use the conversation index or look at the "In-Reply-To" header (exposed by the PR_IN_REPLY_TO_ID MAPI property), assuming you know the message id of the item in the Sent Items folder.

    Take a look at the messages with OutlookSpy (click IMessage) to see if tehre is anything useful on replies that yo ucan use.


    Dmitry Streblechenko (MVP)
    http://www.dimastr.com/redemption
    Redemption - what the Outlook
    Object Model should have been
    Version 5.5 is now available!

    Thursday, November 13, 2014 11:56 PM

All replies

  • Hello,

    A user property should be defined in the default delivery Inbox folder. You can read more about that in the Changes to custom properties in Outlook article .

    Thursday, November 13, 2014 9:48 PM
  • No user property, and no Extended MAPI property in general survives a reply/forward.

    The best you can do is use the conversation index or look at the "In-Reply-To" header (exposed by the PR_IN_REPLY_TO_ID MAPI property), assuming you know the message id of the item in the Sent Items folder.

    Take a look at the messages with OutlookSpy (click IMessage) to see if tehre is anything useful on replies that yo ucan use.


    Dmitry Streblechenko (MVP)
    http://www.dimastr.com/redemption
    Redemption - what the Outlook
    Object Model should have been
    Version 5.5 is now available!

    Thursday, November 13, 2014 11:56 PM
  • Hi,

    If the applicative data itself is not secret, you can try an attachment approach; all required data will be sent via an attachment.

    I know it does not answer the exact question.. but still hope it helps.

    Moshe

    Tuesday, November 18, 2014 1:16 PM