• Outlook User
  • New Outlook app
  • Outlook.com
  • Outlook Mac
  • Outlook & iCloud
  • Developer
  • Microsoft 365 Admin
    • Common Problems
    • Microsoft 365
    • Outlook BCM
    • Utilities & Addins

Save Sent Items in Shared Mailbox Sent Items folder

Slipstick Systems

› Exchange Server › Save Sent Items in Shared Mailbox Sent Items folder

Last reviewed on April 15, 2021     44 Comments

The problem: You have a shared mailbox in your profile and Send as permission on the mailbox. When you send a message from the shared mailbox, the sent message goes into your own Sent Items folder. By default, sent messages are stored in your own mailbox, not the shared mailbox and the DelegateSentItemsStyle registry value is used if you want to store the messages in the shared mailbox Sent Items folder.

If your mailbox is located on Exchange Server 2010, or on Exchange 2013 CU9 or newer (including Office 365 Exchange Online), the Exchange administrator can configure Exchange to save sent items in the shared mailbox automatically. The benefit: you don't need to add DelegateSentItemsStyle to the registry on every computer that uses shared mailboxes, it just works.

Beginning with Exchange 2013 CU9, when a message is sent from a shared mailbox, the sent message can be stored in the sent folder in the shared mailbox without adding DelegateSentItemsStyle to the registry.

Yes, it's been a long time coming, but finally, all shared mailboxes will retain a copy of emails sent from the mailbox. This setting can be enabled or disabled in the Office admin portal or using PowerShell.

Office 365

To enable or disable it in the Office 365 admin portal:

  1. Login into Office 365 Admin portal
  2. Expand Groups and select Shared mailboxes
  3. Double click on the shared mailbox you want to change
    shared mailbox settings dialog
  4. Click Edit under Sent items
  5. Change the settings then Save and close the dialog.
    enable sent items options

Cmdlet for Exchange 2013 CU9 and Office 365

To enable it for emails Sent As the shared mailbox, set the enable flag to true and run the cmdlet:
set-mailbox mailbox-name -MessageCopyForSentAsEnabled $True

To enable it on all shared mailboxes, use this cmdlet:
Get-Mailbox -ResultSize unlimited -Filter {(RecipientTypeDetails -eq 'SharedMailbox')} | set-mailbox -MessageCopyForSentAsEnabled $True

If the email was Sent On Behalf of the shared mailbox, use
set-mailbox mailbox-name -MessageCopyForSendOnBehalfEnabled $True

To disable it for emails Sent As the shared mailbox, use this cmdlet:
set-mailbox mailbox-name -MessageCopyForSentAsEnabled $False

If the email was Sent On Behalf of the shared mailbox, use
set-mailbox mailbox-name -MessageCopyForSendOnBehalfEnabled $False

You can only use use these parameter on shared mailboxes. If you have Send as permissions on a user's mailbox, you need to use the DelegateSentItemsStyle registry key.

If DelegateSentItemsStyle was added to the registry, delete it as it will prevent the server-side feature from working correctly. Look for it at HKEY_CURRENT_USER\​Software\​Microsoft\​Office\​xx.0\​Outlook\​Preferences or use the registry file for your version of Outlook:
Delete DelegateSentItemsStyle Outlook 2016
Delete DelegateSentItemsStyle Outlook 2013
Delete DelegateSentItemsStyle Outlook 2010

Exchange Server 2010

Update Rollup 4 for Exchange Server 2010 Service Pack 2 introduces the Exchange PowerShell cmdlet, Set-MailboxSentItemsConfiguration , giving the administrator the ability to configure which Sent Items folder a message is copied to. Because this new feature is handled by the Exchange server, Outlook can be configured for Online or Cached Exchange Mode.

However, the Exchange server feature only works if the Outlook DelegateSentItemsStyle registry value is disabled.

To save sent items in the sender's Sent Items folder, use this cmdlet:
Set-MailboxSentItemsConfiguration alias -SendAsItemsCopiedTo Sender -SendOnBehalfOfItemsCopiedTo Sender

To save sent items in the Sent Items folder of both the sender and the shared mailbox, use this cmdlet:
Set-MailboxSentItemsConfiguration alias -SendAsItemsCopiedTo SenderAndFrom -SendOnBehalfOfItemsCopiedTo SenderAndFrom

More Information

Messages sent by using the "Send As" and "Send on behalf" permissions are only copied to the Sent Items folder of the sender in an Exchange Server 2010 environment

Save Sent Items in Shared Mailbox Sent Items folder was last modified: April 15th, 2021 by Diane Poremsky

Related Posts:

  • Sending Email from a Secondary Exchange Mailbox
  • Shared Mailboxes and the Deleted Items Folder
  • Convert an Exchange Mailbox to a Shared Mailbox
  • An administrator recently asked for help: We’ve been hit with a misera
    Using the Export-Mailbox cmdlet

About Diane Poremsky

A Microsoft Outlook Most Valuable Professional (MVP) since 1999, Diane is the author of several books, including Outlook 2013 Absolute Beginners Book. She also created video training CDs and online training classes for Microsoft Outlook. You can find her helping people online in Outlook Forums as well as in the Microsoft Answers and TechNet forums.

Subscribe
Notify of
44 Comments
newest
oldest most voted
Inline Feedbacks
View all comments

David (@guest_219711)
September 11, 2022 11:12 pm
#219711

I've posted on the TechNet community site about this behaviour and how it is a design flaw that this behaviour is the default behaviour and that we need to have workflows and policies in place to correct it. Just about every single mailbox, be it a shared mailbox or a delegated user mailbox, I have set up the delegate and shared mailbox users have always agreed they want this behaviour. In terms of security, privacy and integrity, it is also dangerous for an organisation to, by default, have shared mail accounts able to send emails without the primary controller or owner of the mailbox being able to see a copy of any Sent (or deleted) items, by default. Here's my post attempting to raise this and discuss it. I welcome any input or confirmation and challenges to my point.

https://techcommunity.microsoft.com/t5/microsoft-365/current-default-behaviour-for-saving-sent-items-in-delegate-and/m-p/3114579

0
0
Reply
Diane Poremsky(@diane-poremsky)
Author
Reply to  David
September 14, 2022 10:43 am
#219718

Are you using Exchange online? Leave a suggestion here -
https://feedbackportal.microsoft.com/feedback/forum/84b411cc-50d1-ec11-a7b5-0022481f35a4

0
0
Reply
Api (@guest_219164)
February 10, 2022 6:55 am
#219164

Hi Diane
Could you please provide me the macro to insert in outlook to save sent emails from shared mailbox to sent folder from shared mailbox ?
Thank you very much

0
0
Reply
David Jones (@guest_219132)
January 28, 2022 1:11 am
#219132

Hi Diane,

Thanks for the detailed article. Very handy.

For small business clients of mine (CSP partner here) who have a basic level of in house IT abilities, getting them to set this through the Admin Centre is great but shared mailboxes, as discussed here, are not the only place you'd make this setting...

Delegate shared mailboxes also need to have this setting changed. Seems the default behaviour for delegate shared mailboxes is for sent items to only be retained in the delegate's sent items folder and not in the sent items folder of the delegator, with the only way to fix this being through the Exchange PowerShell. It baffles me how Microsoft would make this the default behaviour but then so much they do seems to baffle on an ever increasing basis, these days! The default behaviour for regular and delegate shared mailboxes should be for copies to go into both the senders sent items as well as the sent items of whomever they are sending on behalf of.

Cheers,

David

0
0
Reply
Simon (@guest_219070)
January 10, 2022 5:12 am
#219070

Thanks! Making the change through the Microsoft 365 Admin Center was the easiest solution in our case.

Note: These steps must be performed in the Microsoft 365 Admin Center, not the Exchange Admin Center. The option to manage where sent items are stored does not appear to be exposed in the latter location. This is what was catching us out as we thought we had looked everywhere for this setting; it turns out we were just looking in the wrong place.

3
0
Reply
ray (@guest_219335)
Reply to  Simon
June 2, 2022 3:04 am
#219335

but i cant find this "SENT ITEM" in My O365 admin center....

0
0
Reply
Natarajan A (@guest_218671)
August 24, 2021 11:51 pm
#218671

HI Diane,
After migrated from On-premise exchange server to O365, only one mailbox sent items is duplicating if user sent as email from a shared mailbox. Checked all the settings SendAsItemsCopiedTo is false.
I changed "Set-ItemProperty -Path HKCU:\SOFTWARE\Microsoft\Office\16.0\Outlook\Preferences -Name DelegateSentItemsStyle -Value 0" in my PC and tested, it created one sent item in a shared mailbox and another one in my mailbox.

From other shared mailbox sent item stayed in my mailbox.
Could you let help to fix this problem.
Thank you
Natarajan

0
0
Reply
Jarle (@guest_218192)
May 11, 2021 3:20 am
#218192

Such a great tutorial! Darling youre a absolute legend!

3
0
Reply
Carly (@guest_215881)
September 16, 2020 9:35 pm
#215881

This worked, thanks so much!

1
0
Reply
Rok1215 (@guest_215586)
July 12, 2020 5:54 am
#215586

Hello,
I used the following command:
Set-MailboxSentItemsConfiguration alias -SendAsItemsCopiedTo SenderAndFrom -SendOnBehalfOfItemsCopiedTo SenderAndFrom
But it is now causing issues with sending mails to external email addresses, how do I revert this command? How do I disable it?

0
0
Reply
Diane Poremsky(@diane-poremsky)
Author
Reply to  Rok1215
July 13, 2020 12:10 am
#215589

it definitely should not be affecting messages sent to external addresses - it only copies the sent messages to both the sender and the shared mailbox's sent folders.

You'd use Sender to revert back to the default behavior.
Set-MailboxSentItemsConfiguration alias -SendAsItemsCopiedTo Sender -SendOnBehalfOfItemsCopiedTo Sender

Last edited 4 years ago by Diane Poremsky
0
0
Reply

Visit Slipstick Forums.
What's New at Slipstick.com

Latest EMO: Vol. 30 Issue 19

Subscribe to Exchange Messaging Outlook






Support Services

Do you need help setting up Outlook, moving your email to a new computer, migrating or configuring Office 365, or just need some one-on-one assistance?

Our Sponsors

CompanionLink
ReliefJet
  • Popular
  • Latest
  • Week Month All
  • Jetpack plugin with Stats module needs to be enabled.
  • Open Outlook Templates using PowerShell
  • Count and List Folders in Classic Outlook
  • Google Workspace and Outlook with POP Mail
  • Import EML Files into New Outlook
  • Opening PST files in New Outlook
  • New Outlook: Show To, CC, BCC in Replies
  • Insert Word Document into Email using VBA
  • Delete Empty Folders using PowerShell
  • Warn Before Deleting a Contact
  • Classic Outlook is NOT Going Away in 2026
Ajax spinner

Recent Bugs List

Microsoft keeps a running list of issues affecting recently released updates at Fixes or workarounds for recent issues in classic Outlook (Windows).

For new Outlook for Windows: Fixes or workarounds for recent issues in new Outlook for Windows .

Outlook for Mac Recent issues: Fixes or workarounds for recent issues in Outlook for Mac

Outlook.com Recent issues: Fixes or workarounds for recent issues on Outlook.com

Office Update History

Update history for supported Office versions is at Update history for Office

Outlook Suggestions and Feedback

Outlook Feedback covers Outlook as an email client, including Outlook Android, iOS, Mac, and Windows clients, as well as the browser extension (PWA) and Outlook on the web.

Outlook (new) Feedback. Use this for feedback and suggestions for Outlook (new).

Use Outlook.com Feedback for suggestions or feedback about Outlook.com accounts.

Other Microsoft 365 applications and services




New Outlook Articles

Open Outlook Templates using PowerShell

Count and List Folders in Classic Outlook

Google Workspace and Outlook with POP Mail

Import EML Files into New Outlook

Opening PST files in New Outlook

New Outlook: Show To, CC, BCC in Replies

Insert Word Document into Email using VBA

Delete Empty Folders using PowerShell

Warn Before Deleting a Contact

Classic Outlook is NOT Going Away in 2026

Newest Code Samples

Open Outlook Templates using PowerShell

Count and List Folders in Classic Outlook

Insert Word Document into Email using VBA

Warn Before Deleting a Contact

Use PowerShell to Delete Attachments

Remove RE:, FWD:, and Other Prefixes from Subject Line

Change the Mailing Address Using PowerShell

Categorize @Mentioned Messages

Send an Email When You Open Outlook

Delete Old Calendar Events using VBA

Repair PST

Convert an OST to PST

Repair damaged PST file

Repair large PST File

Remove password from PST

Merge Two Data Files

Sync & Share Outlook Data

  • Share Calendar & Contacts
  • Synchronize two computers
  • Sync Calendar and Contacts Using Outlook.com
  • Sync Outlook & Android Devices
  • Sync Google Calendar with Outlook
  • Access Folders in Other Users Mailboxes

Diane Poremsky [Outlook MVP]

Make a donation

Mail Tools

Sending and Retrieval Tools

Mass Mail Tools

Compose Tools

Duplicate Remover Tools

Mail Tools for Outlook

Online Services

Calendar Tools

Schedule Management

Calendar Printing Tools

Calendar Reminder Tools

Calendar Dates & Data

Time and Billing Tools

Meeting Productivity Tools

Duplicate Remover Tools

Productivity

Productivity Tools

Automatic Message Processing Tools

Special Function Automatic Processing Tools

Housekeeping and Message Management

Task Tools

Project and Business Management Tools

Choosing the Folder to Save a Sent Message In

Run Rules on messages after reading

Help & Suggestions

Submit Outlook Feature Requests

Slipstick Support Services

Buy Microsoft 365 Office Software and Services

Visit Slipstick Forums.

What's New at Slipstick.com

Home | Outlook User | Exchange Administrator | Office 365 | Outlook.com | Outlook Developer
Outlook for Mac | Common Problems | Utilities & Addins | Tutorials
Outlook & iCloud Issues | Outlook Apps
EMO Archives | About Slipstick | Slipstick Forums
Submit New or Updated Outlook and Exchange Server Utilities

Send comments using our Feedback page
Copyright © 2025 Slipstick Systems. All rights reserved.
Slipstick Systems is not affiliated with Microsoft Corporation.

wpDiscuz

Sign up for Exchange Messaging Outlook

Our weekly Outlook & Exchange newsletter (bi-weekly during the summer)






Please note: If you subscribed to Exchange Messaging Outlook before August 2019, please re-subscribe.

Never see this message again.

You are going to send email to

Move Comment