What does a 'large number of items' exactly mean?

john-evans-solachuk 1 Reputation point

In Items.ItemAdd event description, it says that

This event does not run when a large number of items are added to the folder at once.

In the context of Outlook's Outbox folder, how large is large and how do I simulate adding a large number of items moving to Outlook Outbox naturally in terms of composing and sending out the mail?

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Office: A suite of Microsoft productivity software that supports common business tasks, including word processing, email, presentations, and data management and analysis.Development: The process of researching, productizing, and refining new or existing technologies.
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  1. ChristyZhang-MSFT 20,616 Reputation points Microsoft Vendor

    Hi @ricardo-6009 ,

    Welcome to our forum.

    Based on my research, I found an article which mentioned that this event is not fired if more than 16 elements are dragged for Outlook2000、Outlook20020、Outlook2003, and is not fired if more than 512 elements for Outlook 2007 with SP2, for reference only. For newer versions of Outlook, no related instructions were found for Items.ItemAdd event.
    (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.)

    For your another question about how to add a large number of items moving to Outlook Outbox, I have done a lot of searches but didn't find any helpful suggestions. Please kindly understand that the Outlook tag here we mainly focus on general issues about Outlook desktop client and know little about vba. In order to better solve your problem, we will remove add "office-vba-dev" tag.

    Thanks for your understanding and hope your question will be resolved soon.

    If the response is helpful, please click "Accept Answer" and upvote it.
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