I’ve added my Outlook.com mailbox to Outlook 2013 as an Exchange ActiveSync (EAS) account. In the Navigation Pane, the display mailbox of the mailbox is the full email address of my Outlook.com account.

Because my email address is quite long, it gets truncated with “…”. Preferably, I just want it to show my first name since it is my personal account.

Is there any way I can rename or otherwise shorten this mailbox name?