Why Clean up Conversation does not work when the emails in the conversation thread are stamped with custom properties?

thopulou duo 1 Reputation point
2021-03-26T09:20:32.817+00:00

Conversation clean Up folder works does not work when emails are stamped with custom mapi properties. Does Clean up folder works only for emails which has not been modified by third party Application? We filed the emails to our server after stamping some custom properties to emails(marking them as filed). It perfectly works fine for emails that is not filed to our server. Will be great if someone could give some knowledge on Clean Up Folder.

Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
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Microsoft 365 Publishing
Microsoft 365 Publishing
Microsoft 365: Formerly Office 365, is a line of subscription services offered by Microsoft which adds to and includes the Microsoft Office product line. Publishing: The process of preparing, producing, and releasing content for distribution or sale.
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  1. Jade Liang-MSFT 9,956 Reputation points Microsoft Employee
    2021-03-29T08:55:44.12+00:00

    Hi @thopulou duo ,

    Did the issue occurred on all users who have messages with custom properties in your organization?
    Please kindly understand here we mainly focus on general issue on Outlook desktop client, I know little about development and couldn't test with those emails that have custom properties, I have also tried to researched a lot about it but still in vain, if you still need more specific information about the message with custom mapi properties, it's suggested to add more development tag under your post.

    Also, in the point of Outlook, for the requirement of clean up duplicates message, if the feature of clean up folder indeed couldn't work on your messages, we could also clean up it mannually after you change the message view and sort it, for more information, you could refer to this article.(Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.)

    Hope that would be helpful to you.

    If the response is helpful, please click "Accept Answer" and upvote it.
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  2. thopulou duo 1 Reputation point
    2021-04-14T15:33:03.46+00:00

    Hi Jade,

    The issue is not resolved yet.
    It happens to all the customers.
    I have attached the screenshot of custom properties

    And the customer is chasing us on this.
    Any help would be so helpful.87863-customproperties.png

    Thanks,
    Thopulou

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