Python Outlook: How to access non-default Mailbox

[heycooldude]

I have my outlook mailboxes in this structure

mailbox1
-Inbox

Mailbox2
-Inbox

Current script is able to access Inbox of mailbox1 as it is my main mail box where as mailbox2 has been added into my profile. I want to be able to access Inbox of Mailbox2

import win32com.client
import pythoncom
import re

class Handler_Class(object):
    def OnNewMailEx(self, receivedItemsIDs):
        # RecrivedItemIDs is a collection of mail IDs separated by a ",".
        for ID in receivedItemsIDs.split(","):
            mail = outlook.Session.GetItemFromID(ID)
            subject = mail.Subject



outlook = win32com.client.DispatchWithEvents("Outlook.Application", Handler_Class)

#and then an infinit loop that waits from events.
pythoncom.PumpMessages() 

The above script is accessing mailbox1 Inbox.
Is there any way to access inbox of maillbox2?