How do I receive email on different accounts into different folders in Outlook?

How do I receive email on different accounts into different folders in Outlook?

For this example, I'll create two email accounts: business@ and personal@ my company domain. It's probably not that uncommon a scenario to have separate addresses for business and personal use.
Here's what you might see in Outlook's Tools, Email accounts... list of existing accounts:






I'll also create the two sets of folders. We'll use the default Inbox for the default business account, and create a second "Inbox - Personal" for the personal account. Similarly I'll use the default "Sent
Mail" for business, and "Sent Mail - Personal" for the personal account. Here's the folder list with the folders set up:









Now we'll use Rules to direct incoming and outgoing mail into the
correct folders.
Click on the Tools menu, Rules and Alerts... item, and then click on New Rule. You should be presented with this dialog:



We'll Start from a blank rule, and Check messages when they arrive:

 

Click Next. It's on this dialog that the magic happens:










On this screen of the wizard, we've selected through the specified account. Having done so, you can now click on the word specified in the Edit the Rule Description lower box, and you'll get this box
to choose which account you want this rule to act on:



Since in this example we're setting up a rule for our personal email, we'll select that account and press OK. You'll see the account updated in the Edit the Rule Description box.

Press Next to move on, and you'll get this next page of the wizard: