Mailbox Delegation

Written by Christopher Lee

Last published at: October 23rd, 2026

FAQ

What is mailbox delegation?

Similar to having an assistant that helps you manage your incoming paper mail, another person, known as a delegate, can receive and respond to email messages and meeting requests and responses on your behalf. You can also grant the delegate additional permissions to read, create, or change items in your Microsoft Exchange Server mailbox.

Who should use delegation?

This is not generally recommended except for administrative assistants or similar circumstances.

What does Delegate Access do?

Delegate Access goes beyond just sharing access to your folders. Delegates are granted additional permissions, such as creating email messages or responding to meeting requests on your behalf.

Additional details here: Microsoft - What does Delegate Access do?

What permission levels are there?

Reviewer 

With this permission, the delegate can read items in your folders.

Author

With this permission, the delegate can read and create items, and change and delete items that he or she creates. For example, a delegate can create task requests and meeting requests directly in your Task or Calendar folder and then send the item on your behalf.

Editor

With this permission, the delegate can do everything that an Author has permission to do and additionally can change and delete the items that you created.

 
 

Assign delegate permissions

Granting access

These steps are for granting or giving someone (Delegate) access to your mailbox.

 

Outlook for Mac

In Outlook, go to the Outlook menu and select Settings.

 


Click on Accounts (Top Row), click on the account you want to add it to, and then click Delegates & Sharing


Click on the + sign.


Type in a email address to search for the person.  Once found, select the desired entry and click Add.


Select desired permission to delegate.

Additional Resources:


Click OK to complete the process.

 
 

Outlook for Windows

There are two options for delegating calendar access. Assign edit permissions only and Assign delegate permissions.

Option 1: Assign edit permissions only:


In new Outlook from the navigation pane, select Calendar. From the Home tab, select Share Calendar.


In the Sharing and permissions page, type the name or email address of the person you want to share your calendar with. Though you can share your calendar with more than one person, you can only add one person at a time.

After you've added the person you want to manage your calendar, select the drop-down list next to their name, and choose the level of access you want them to have.

Select Can edit to give them permission to make changes to your calendar.

  • The options Can view when I'm busy, Can view titles and locations, and Can view all details allow others to view your calendar but not make changes to it. Access for people from outside your organization is limited to these options.


 


Option 2: Assign delegate permissions

Delegates can not only edit your calendar, but they can also schedule and respond to meetings on your behalf.

  • select Calendar                                                                                                                        
  • From the Home tab, select Share Calendar.                                                                           
  • In the Sharing and permissions page, type the name or email address of the person you want to share your calendar with and assign delegate access. Though you can share your calendar with more than one person, you can only add one person at a time from Outlook on the web.
  • After you've added the person you want to manage your calendar, select the drop-down list next to their name, and choose the level of access you want them to have.
  • Select Delegate to give them the same permission as an editor, plus they will receive meeting requests and responses on your behalf. To allow the delegate to see events on your calendar you marked Private, select the checkbox for Let delegate view private events. To allow the delegate to manage your categories, select the checkbox for Let delegate manage categories.

Note

Calendar items marked Private are protected. Most people you share your calendar with see only the time of items marked Private, not the subject, location, or other details. The exception to this is if you select the Let delegate view private events check box.

 


After you've finished adding the person you want to share your calendar with and have chosen which permission you want to give them, select Share. If you decide not to share your calendar right now, select Remove Remove.
The person you shared your calendar with will receive an email message telling them about it. When they select the Accept button in the invitation, it will add your calendar to their list of calendars.

After you've given someone delegate access to your calendar, you'll see an additional option in Sharing and permissions that lets you control how meeting requests and responses are processed. If you have multiple delegates, you'll need to do this for each of your delegates.

Under Delegates, next to Send invitations and responses to, select one of the following options:

  • Delegate only Meeting requests and responses go only to your delegates.
  • Delegate and send me a copy Meeting requests and responses are sent to you and your delegates. Only your delegates see the option to accept or decline a meeting request, and the notification sent to you will appear like a normal email message. You can still respond to the meeting by opening the calendar item and responding.
  • Both my delegate and me Meeting requests and responses are sent both to you and your delegates. Either of you can respond to the meeting invitation.

If you decide not to share your calendar with someone, under Delegates select Remove Remove for the person you no longer want to act as a delegate.

 
 
 
 

Adding Shared Mailbox (Delegated Mailbox) to Outlook

Accessing shared mailbox

These steps are for accessing a mailbox you have been given permission to (Delegated).

 

Select Outlook platform\version to continue.

Outlook for Mac

 

Outlook for Windows

 
 

In Outlook, go to the File, Open and Shared Mailbox.


Search for the shared mailbox you are part of (essentially you have permission to add/view). And then Add.


Your Shared Mailbox should appear on the left pane.

 



 

In Outlook, Click on the File menu.


Click Account Settings then Account Settings...


Select account to edit and click Change


From Change Account window click More Settings...


Click Advanced tab. Click Add.

Enter email address of mailbox to be delegate for and click OK


Click OK until back to normal Outlook window.

May need to close and re-launch outlook for mailbox to load.

 
 

 

 
 

Revoking Delegate

Write your initial question/sentence to troubleshoot

Outlook for Mac

 

Outlook for Windows

 
 
Launch Outlook, go to the Tools menu and select Account.

Click on your account (upper left corner) and then click Advanced (lower right corner).


Go to the Delegates section.

  1. Highlight the name of the delegate you want to remove.
  2. Select the Remove button (-). 
    • The name of the delegate is removed from the Delegates screen.
  3. Select the OK button. The Delegates screen closes.

 

Launch Outlook and select the File tab.

Next, select Account Settings. A drop-down menu displays.

Delegate1


Select Delegate Access from the drop-down menu. The Delegates screen displays.

RemoveDelegate

  1. Highlight the name of the delegate you want to remove.
  2. Select the Remove button. The name of the delegate is removed from the Delegates screen.
  3. Select the OK button. The Delegates screen closes.