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Monday, June 17, 2024

Copy Sent Items to Shared Mailboxes and delegates

From Exchange 2013 Cu9 or later versions of Exchange 2013 and Exchange Online (Office 365). When user sends emails using send as over a shared mailbox we have an option of saving sent items on the shared mailboxes. So that all sent items can be stored in a centralized location. make sure all the exchange 2013 servers in the environment running cu9 or later.

Lets see how to do that.

  • you cannot login to a shared mailbox directly.
  • Sent items are not stored when you do SendAs by default.
  • Mostly shared mailboxes are department mailboxes like HR, contact us, info mailboxes.

Creating a Shared Mailbox –


New-Mailbox commonmailbox -Database "*514" -Shared


Providing User2 Full access to the Common Mailbox (for the user to access all the content in that mailbox) –


Add-MailboxPermission Commonmailbox -User user2 -AccessRights FullAccess -InheritanceType All


To Remove the Mailbox Permission –

Remove-MailboxPermission -Identity ayla -User "Jim Hance" -AccessRights FullAccess –Inheritance

Providing User2 Send As to the Common Mailbox –

On-premises –

Add-ADPermission -Identity commonmailbox -User user3 -ExtendedRights "Send As"

Exchange Online –

Add-RecipientPermission -Identity "commonmailbox" -Trustee "user3" -AccessRights SendAs


By Default “From” is not enabled in Outlook Web App .  To Enable that – login to owa go for options. Check the options always show “from”



As default am sending as commonmailbox to my CEO.


Common mailbox – send as emails are not storing in sent items by default.


Lets see how to enable that –

set-mailbox commonmailbox -MessageCopyForSentAsEnabled $True


Good to know – For SendOnBehalf

set-mailbox commonmailbox -MessageCopyForSendOnBehalfEnabled

Now you can see the Sent items saved in the Common mailbox





Satheshwaran Manoharan
Satheshwaran Manoharanhttps://www.azure365pro.com
Award-winning Technology Leader with a wealth of experience running large teams and diversified industry exposure in cloud computing. From shipping lines to rolling stocks.In-depth expertise in driving cloud adoption strategies and modernizing systems to cloud native. Specialized in Microsoft Cloud, DevOps, and Microsoft 365 Stack and conducted numerous successful projects worldwide. Also, Acting as a Technical Advisor for various start-ups.

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