For those of you still unaware, Microsoft explains that you can reduce your email chores and work load by simply configuring all your email accounts on Outlook 2010. This can also save you a lot of time by not having you navigating from one link to another so as to check on your mails from different email servers and accounts.
So here are the steps as suggested by Microsoft in having your email account(s) configured on Outlook 2010.
Configuring your Email Account on Outlook 2010 with Outlook setting and Options
To begin with, Microsoft first suggests you launch Outlook 2010 on your computer (cancel the wizard that pops up as soon as you run the program in case you have just installed Outlook 2010 on your computer).
Once you have it up and running, head for its “File” menu and then click on “Info” followed by the “Add Account” button.
After which, select the Outlook setting option “Manually Configure Server Settings or Additional Server Types” followed by “Next” so as to get to the “Internet Email” option and again click on “Next”.
Microsoft then suggests you enter your name exactly the way it appears on your outgoing messages followed by the full email address for your account.
And again the exact name as it appears on your incoming and outgoing mail server as given by your email provider along with your username and password. 
Next up, choose the Outlook setting option “New Outlook Data File” in having all your incoming emails for this account to go to its own folder. While all your sent mails from this account will be automatically directed to the “Sent Items” folder.
And as such, Microsoft adds that all your deleted emails for this account will be directed to its own “Deleted Items” folder.
So now choose “Existing Outlook Data File” to have the emails from this account merged with emails from the other accounts.
Microsoft also suggests you browse through your system and locate the Outlook data file for each and every one of your accounts in having all the emails directed to a single folder.
Finally click on “Test Account Settings” and allow your Outlook program to send and receive a small test email so as to ensure that your account settings have been properly configured.
