Outlook Sent Items Missing After Using Shared Mailbox: Fix

When you send an email from a shared mailbox in Outlook, the sent message often disappears from your Sent Items folder. This happens because Outlook saves a copy of the sent email to the shared mailbox’s Sent Items folder instead of your own. You may see no confirmation that the email was saved at all, leaving you unsure whether the message was sent correctly. The cause is a default Outlook behavior: it stores sent items in the mailbox from which the email was sent. This article explains how to keep a copy of sent messages from a shared mailbox in your own Sent Items folder using a simple setting change.

Why Outlook Does Not Save Sent Items from a Shared Mailbox

Outlook treats each mailbox as a separate data store. When you send an email using the shared mailbox’s address via the From field, Outlook writes the sent item to the Sent Items folder of that shared mailbox. If you do not have full access permissions to the shared mailbox, you cannot see its Sent Items folder in your Outlook navigation pane. This makes the sent email appear missing from your own Sent Items folder.

The behavior is by design. Outlook does not automatically copy sent items from a shared mailbox to your personal Sent Items folder. Without a configuration change, you must manually check the shared mailbox’s Sent Items folder through Outlook Web Access or request full mailbox permissions from your Exchange administrator.

This issue occurs in all modern Outlook versions including Outlook for Microsoft 365, Outlook 2021, Outlook 2019, and Outlook 2016. The fix is the same across all these versions.

Steps to Save Sent Items from a Shared Mailbox to Your Own Sent Items Folder

1. Open Outlook and go to File > Options
   Click File in the top-left corner, then click Options at the bottom of the left pane. This opens the Outlook Options dialog.
2. Select the Mail tab
   In the Outlook Options dialog, click Mail in the left sidebar. This shows all email-related settings.
3. Locate the Save messages section
   Scroll down to the section labeled Save messages. You will see several checkboxes and dropdown menus.
4. Enable the save copies option
   Check the box labeled Save copies of messages in Sent Items folder. This setting tells Outlook to save a copy of every sent email in your personal Sent Items folder regardless of which mailbox you sent it from.
5. Click OK to apply the change
   Click OK at the bottom of the Outlook Options dialog. No restart of Outlook is required. The next email you send from the shared mailbox will appear in your own Sent Items folder.

Verify the Setting Works

1. Compose a test email from the shared mailbox
   Create a new email. Click the From button and select the shared mailbox address. Send the email to your own email address or a test account.
2. Check your Sent Items folder
   Open your personal Sent Items folder. The test email should appear there. If it does not, restart Outlook and repeat the test.

If the Setting Does Not Work

Outlook Still Saves Sent Items to the Shared Mailbox

If the above setting does not change the behavior, your Exchange administrator may have enforced a group policy that overrides the user setting. Contact your IT department and ask them to check the Exchange mailbox policy for the shared mailbox. The relevant setting is SaveSentItemsFolder on the mailbox. The administrator can set this to your own mailbox’s Sent Items folder using the Exchange Admin Center or PowerShell.

You Cannot See the Shared Mailbox Sent Items Folder

If you need to access sent items that were already sent before you enabled the setting, you must view the shared mailbox’s Sent Items folder directly. In Outlook, expand the shared mailbox in the folder pane. If the shared mailbox does not appear, add it again using File > Account Settings > Account Settings > Change > More Settings > Advanced > Add. Look for the Sent Items folder under the shared mailbox’s folder tree. If you do not have permissions to see it, request full mailbox access from your Exchange administrator.

Sent Items Duplicate After Enabling the Setting

With the save copies option enabled, Outlook saves one copy to your Sent Items and one copy to the shared mailbox’s Sent Items. This is normal behavior. To avoid duplicates, you can ask your administrator to disable the shared mailbox’s ability to save sent items by setting the SaveSentItemsFolder property to your mailbox only. This requires PowerShell access to Exchange Online or on-premises Exchange.

Default Sent Items Behavior vs With the Fix Applied

Item	Default Behavior	With Fix Applied
Sent item location	Shared mailbox’s Sent Items folder	Your personal Sent Items folder
Visibility in Outlook	Hidden if you lack full mailbox permissions	Visible in your own Sent Items folder
Duplicate sent items	No duplicates	One copy in your Sent Items, one in shared mailbox Sent Items
Configuration effort	None	One checkbox in Outlook Options
Administrator required	No	Only if group policy overrides the setting

Advanced Tip: Use Registry to Force Sent Items to Your Mailbox

For users comfortable with the Windows Registry, you can set a registry key that forces Outlook to save sent items from a shared mailbox to a specific folder. This is useful when the checkbox in Outlook Options is grayed out or ineffective due to group policy.

Close Outlook. Open Registry Editor by pressing Windows key + R, typing regedit, and pressing Enter. Navigate to HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Preferences. Create a new DWORD (32-bit) value named SaveSentItemsToPersonalFolder and set its value to 1. Restart Outlook. This registry key applies to all mailboxes in your profile. Use this only if you understand the risks of editing the registry. Always back up the registry before making changes.