Deleting or Hiding Default Folders in Outlook

Published by Nyau Wai Hoe - Updated on

Microsoft Outlook automatically creates several default folders for managing emails and other items efficiently. These include Conversation History, Junk Email, Archive, Suggested Contacts, and RSS Feeds, among others. While these folders serve essential organizational purposes, some users may find them unnecessary or prefer a cleaner Outlook interface.

Although it’s generally not recommended to delete these default folders, as they are part of the structure of Outlook’s data file, there are ways to hide or remove them for users determined to customize their Outlook experience. This article guides you through the process of deleting or hiding default folders in Outlook using MFCMAPI, a powerful tool for advanced Outlook management.

Deleting or Hiding Default Folders in Outlook

What is MFCMAPI?

MFCMAPI (Microsoft Exchange Server MAPI Editor) is a low-level editing tool that provides access to MAPI stores through a graphical user interface. It’s intended for developers and experienced users to troubleshoot Microsoft Exchange and Outlook issues.

Using MFCMAPI to delete or hide Outlook’s default folders is an advanced operation. It involves directly manipulating the properties of your Outlook profile, which carries a risk of data loss or corruption if not done carefully. Therefore, it’s crucial to proceed with caution and ensure you have a complete backup of your Outlook data before making any changes.

Related resource: How to Get Outlook to Open Links in Chrome on Windows 11/10

Backing up your data and downloading MFCMAPI

Before making any changes to your Outlook profile using MFCMAPI, it’s important to take the necessary precautions to safeguard your data. Here’s how to prepare:

  1. Ensure you have a current backup of your entire Outlook data file (.pst or .ost). This step is critical as it allows you to restore your data in case something goes wrong during the editing process. You can create a backup by copying the data file to another location on your computer or an external storage device.
  2. Make sure Outlook is completely closed before launching MFCMAPI. This precaution helps prevent conflicts or errors as you make changes to the Outlook profile.
  3. If you haven’t already, download the latest version of MFCMAPI from its Github repository at https://github.com/microsoft/mfcmapi/releases. If your Outlook is the 64-bit version, you will need to download the 64-bit version of MFCMAPI as well.Download MFCMAPI

The next steps will involve using MFCMAPI to hide or delete the default folders in your Outlook profile.

Deleting a default folder in Outlook with MFCMAPI

To delete a default folder in Outlook, such as Junk Email, Conversation History, Archive, RSS Feeds, or Suggested Contacts, follow these detailed steps using MFCMAPI:

  1. After downloading and unzipping MFCMAPI, double-click to run the application.
  2. Navigate to “Session > Logon” and select your Outlook profile from the list. If you have multiple profiles, choose the one you use regularly.Session login MFCMAPI
  3. Double-click on your data file in the list that appears. If there’s more than one data file, the primary one usually appears at the top, indicated by “True” in the “Default Store” column.Select Outlook default profile for edit
  4. Expand the “Root Container” (or “Root – Mailbox” if you’re using an Exchange account).Expand Outlook Root Mailbox
  5. Then, expand “Top of Outlook Store.” For Exchange accounts, this will be “IPM_SUBTREE.”Edit Microsoft Outlook default folders
  6. Browse through the folder list and select the folder you wish to delete.
  7. Right-click the selected folder and choose “Delete Folder.” When prompted, click “OK” to confirm the deletion. Ensure not to select “Hard Deletion” as this option doesn’t work on most folders.Delete default conversation history folder in Outlook
  8. Close all open dialog boxes in MFCMAPI and reopen Outlook to see the changes.How to delete default folder in Outlook

Important notes:

  • Deleting a folder will remove all items contained within it. Ensure you’ve moved or backed up any important data before deletion.
  • Some folders play critical roles in Outlook’s operation. Deleting essential folders can lead to errors or instability in the application.

Hiding a default folder in Outlook

If you prefer to hide a folder rather than delete it, which is generally more recommended, follow these steps:

  1. Run MFCMAPI as previously described.
  2. Go to “Session > Logon” and choose the appropriate Outlook profile.
  3. Double-click your data file, ensuring you choose your default data file as indicated by “True” in the “Default Store” column.
  4. Expand the “Root Container” or “Root – Mailbox.”
  5. Then, expand “Top of Outlook Store” or “IPM_SUBTREE.”
  6. Navigate and select the “Quick Step Settings” folder, then locate the “PR_ATTR_HIDDEN, PidTagAttributeHidden, ptagAttrHidden” entry, which is usually near the top of the list.
  7. Right-click the “PR_ATTR_HIDDEN” entry and choose “Copy Property.”hiding default folders in Microsoft Outlook
  8. Navigate to the folder you wish to hide, right-click it, and select “Paste…” to apply the hidden property.How to hide a default folder in Outlook
  9. Click “OK” twice to confirm adding the property, then close all dialog boxes in MFCMAPI and return to Outlook.

These steps allow advanced Outlook users to tailor their folder list by removing or concealing unnecessary default folders. Remember, these actions can have significant effects on your Outlook profile, so proceed with caution and ensure you have a backup before making any changes.

Reversing changes or troubleshooting

Even with careful planning and execution, the need to reverse changes or troubleshoot issues may arise after deleting or hiding folders in Outlook using MFCMAPI. Here’s how to address common scenarios:

Restoring deleted folders:

If you accidentally delete a folder or later decide you need a folder that was deleted:

  • The safest way to restore deleted folders is from a backup. Replace the current data file with the backup version to revert your Outlook to the state before the changes.
  • If the folder was not critical (e.g., a custom folder rather than a default like Junk Email), you might simply recreate it in Outlook. However, this doesn’t recover the items that were in the deleted folder.

Unhiding Folders:

If a folder was hidden and you wish to make it visible again:

  1. Follow the steps to log on to your profile with MFCMAPI, navigate to the hidden folder, and find the “PR_ATTR_HIDDEN” property.
  2. Remove the tick from the Boolean field to unhide the folder. This process is essentially the reverse of hiding the folder.Unhide a hidden default folder in Outlook

General issues:

If Outlook behaves unexpectedly after making changes with MFCMAPI:

  • Ensure that only the intended folders were deleted or hidden. Accidentally modifying other folders or settings can cause issues.
  • Use the Inbox Repair Tool (ScanPST.exe) to repair your Outlook data files. Corruption within these files can lead to various issues, including those not directly related to the changes made.
  • If problems persist and are not resolved through other means, consider creating a new Outlook profile. This can often resolve issues stemming from corrupt profiles or configurations.

Final notes

Manipulating Outlook’s default folders using MFCMAPI is an advanced procedure that offers a way to customize your email experience by deleting or hiding folders. However, due to the potential for data loss or corruption, it’s extremely important to approach this process with caution, ensuring you have adequate backups and a clear understanding of the steps involved.


Nyau Wai Hoe
Nyau Wai Hoe is the Founder and Chief Editor of WindowsDigitals.com. With a degree in software engineering and over 12 years of experience in the tech support industry, Nyau has established himself as an expert in the field, with a primary focus on the Microsoft Windows operating system. As a tech enthusiast, he loves exploring new technologies and leveraging them to solve real-life problems.

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