This article will explain how to add a mailbox that you have been given delegate permissions on. Please note: The owner of the mailbox will need to complete the steps outlined in the article below before you will be able to access their mailbox.
Once this has been done follow the steps below to add the mailbox.
Please do not do this for Shared Mailboxes. They will automatically add themselves to your Outlook once you have been given permissions on them by IT. Manually adding them can cause problems.
Open Outlook and click ‘file’ in the top left, then click on ‘account settings’ and ‘account settings’ again.
This will open the Account Settings a new window, shown below. There should be a check next to your email address, double click on the check mark to open the 'Exchange Account Settings' window.
Next, click the ‘more settings’ button.
Within the 'Microsoft Exchange' dialog box, click the ‘Advanced’ tab and click the 'Add' button at the top right of the tab.
This will then prompt you to enter the mailbox address of the person you have been given delegate access for. Usually this will need to be entered in the format of the address with their initials (E.firstname.lastname@example.org).
Once this is done, their full name should be shown under ‘open these additional mailboxes’. At this point you can click ‘apply’ and then ‘OK’ which will add the mailbox as an option underneath your own. This will also grant you access to that person’s calendar if they have given you permissions to that as well.