How to change the default mailbox in Outlook.

When you launch the Outlook application, it will automatically open the inbox of  the last created email account. If you wish to change this default folder, we can change it into any other folder.

Step-1

Go to the File tab

Step-2

Go to the Options

Step-3

Click the Advanced

Step-4

Click the Browse... button from the 'Outlook start and exit button'. 

Step-4

Select the folder you want to make the default one.