Share Your Mailbox Using Delegate Permissions

Overview

To grant delegate permissions, you must use Outlook for Windows.

Only use delegation if you need another person to be able to send emails, meeting requests, and meeting acceptances for you. It may be helpful to review Best Practices - Sharing and Delegation for additional context.

You can give other Microsoft 365 users permission to access certain features of your account, such as:

  • Viewing and making appointments on your calendar

  • Looking at and updating tasks

  • Reading mail in your inbox and sending mail on your behalf

  • Accessing and adding to your contacts list

  • Reading notes

  • Viewing your journal

If you have access to another person's account and act on their behalf, you are known as a delegate. If the other person does not need to be a delegate, you can share Office 365 information with them.

Assigning Delegate Permissions to Another Person (Outlook for Windows)

  1. Open Outlook.

  2. Open the File tab

  3. Select Account Settings and select the Delegate Access from the pull-down menu.

  4. Click or tap the Add button, then select the user(s) you want to give delegate permissions to.

  5. In the Delegate Permissions dialog, you can assign permissions for various features to the delegated users you selected in the previous step. You can select from the following levels of permissions for each item:

    • None

    • Reviewer (can read items)

    • Author (can read and create items)

    • Editor (can read, create, and modify items)

  6. To send a message to the new delegates informing them of their new permissions, select Automatically send a message to delegate summarizing these permissions.

  7. Select the Delegate can see my private items option if you wish to give your delegate this ability.

  8. Click or tap the OK button twice.

Sharing Your Mailbox with Users in Outlook on the web

  1. Sign in to Outlook on the web.

  2. Right-click your mailbox name.

  3. Click or tap Permissions.

  4. Click or tap the + to grant permissions to a user.

See the following links for other sharing options:

Sharing Permissions Glossary

Each permission level has different capabilities:

Author: Create and read items and files, and modify and delete items and files you create.

Contributor: Create items and files only. The contents of the folder do not appear. (Does not apply to delegates.)

Custom: Perform activities defined by the folder owner. (Does not apply to delegates.)

Editor: Create, read, modify, and delete all items and files.

Owner: Create, read, modify, and delete all items and files, and create sub-folders. As the folder owner, you can change the permission levels others have for the folder. (Does not apply to delegates.)

Non-Editing Author: Full read details. Create items. Delete own items. Folder visible.

None: You have no permission. You can't open the folder.

Publishing Author: Create and read items and files, create sub-folders, and modify and delete items and files you create. (Does not apply to delegates.)

Publishing Editor: Create, read, modify, and delete all items and files, and create sub-folders. (Does not apply to delegates.)

Reviewer: Read items and files only.

Send On Behalf Of: A delegate may have permissions to send on behalf of the person they’re a delegate for. Sent messages contain the names of both the manager and the delegate. Message recipients see the manager's name in the Sent On Behalf Of box and the delegate's name in the From box.

Additional Resources

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