Note: To use this feature, you must be granted Full Access to the mailbox that you wish to open. Full access can be granted only on Enterprise accounts. 

Read the following Knowledge Base articles for more information:
How Do I Enable Send As Or Full Access Permissions On An Exchange Account?
How Do I Share (Let Others See) My Outlook Folders?

This article covers the following:

To open another user's mailbox in Outlook Web Access

  1. Log in to OWA using your own mailbox email address and password.
  2. Click on your name in the upper-right corner of the window and click Open another mailbox.
  3. In the Open another mailbox box, enter the email address of the mailbox that you want to open and click Open. The mailbox will open in a new window.

To add a shared mailbox to the left navigation pane:

  1. Sign in to your account in OWA.
  2. Right-click your primary mailbox in the left navigation pane, and then choose Add shared folder.
  3. In the Add shared folder dialog box, type the name or email address of the mailbox you have full access to, and select Add.

The shared mailbox and its folders will be displayed in the left navigation pane each time you open OWA.


If the mailbox doesn’t open and you get the following error message instead:
"Something went wrong. You don't have permission to open this mailbox."
then you need to make sure that you were granted full access to that mailbox.

Double-check the permissions granted by going to HostPilot > Services > Exchange Mailboxes. Click the display name of the shared mailbox to open settings. On the Exchange Server tab, click Full access & Send As to view the list of permissions.

In case you need to open the mailbox in Outlook client after full access is given read the Knowledge Base article on How Do I Add Someone Else's Mailbox To My Exchange Outlook Profile? for more information.

Knows issues

It is not possible to open Full Access mailbox with + sign in its email address using the steps above. In order to open a mailbox, you need to search for instead of when opening another mailbox in OWA. Alternatively, you may compile a weblink to access another mailbox as in example below:

Mailbox email address Weblink https://YourExchangeProxyServer/owa/

Your Exchange Proxy Server information can be found under Home > Exchange servers and settings > Exchange proxy setting.
Important: to protect your account information we cannot publish your Server names in public Knowledge Base.