Office365 - Granting permission to another user's mailbox

Source: http://community.office365.com/en-us/forums/148/t/167084.aspx

There are two options for you to grant User B’s Full Access permission to User A.

1. If you are using Office 365 after-upgrade, you can grant Full Access permission in Exchange Admin Center (EAC).

a. Log into the admin center with global administrator account.

b. Click the “Outlook” tab in the top panel to enter OWA (Outlook Web App).

c. In the address bar, change the URL after “owa” to “ecp”. For example, if the URL of your Outlook Web App is https://server.outlook.com/owa/?exsvurl=1&ll-cc=1033&modurl=0&realm=domain.onmicrosoft.com, please change it to https://server.outlook.com/ecp/ to enter your Exchange admin center.

d. Click recipients on the left navigation.

e. Click mailbox on the right panel and double-click the display name of the mailbox (User B) you want to edit.

f. Click mailbox delegation on the left navigation.

g. Add User A under Full Access.


Please note: After granting the Full Access permission, we recommend you re-sign in to OWA (User A) to use “Open Another Mailbox” to open the mailbox (User B).

2. Use Windows PowerShell to grant Full Access permission.

a. Connect Windows PowerShell to the Service: http://help.outlook.com/en-us/140/cc952755.aspx

b. Run the following command:
Add-MailboxPermission -Identity "User B" -User UserA -AccessRights FullAccess -InheritanceType All

For more detailed information, please refer to the following link: http://technet.microsoft.com/en-us/library/bb124097(v=exchg.150).aspx

@AppRiver, your efforts are appreciated.

Thanks,
Anna Shi

Source: http://community.office365.com/en-us/forums/148/t/167084.aspx