How can I delete My Mailbox?

Follow these steps to delete My Mailbox:
1. Click the Menu icon.
2. Select Essentials.
3. Click Inbox.
4. Click the Configure button.
5. Click the My Mailbox tab in the Mailbox Settings window.
6. Click Delete Mailbox.
7. Type ‘My Mailbox’ in the textbox to confirm the deletion.
8. Click Delete.