1. Start the Microsoft Outlook program.
You can use the Start menu to start Outlook. When it opens, click Tools, then Accounts Settings from the menu bar:

2. Select the account to change.
Highlight the account you want to change, and then click Change to open the settings window.

3. The "Change E-mail Account" window opens.
The screen should look something like this:

4. Open the Advanced settings screen.
Click the "More Settings" button, and then choose the "Advanced" tab.
In the "Advanced" tab, check the Leave a copy of messages on the server checkbox.
To make sure copies of every message don't stay on the server forever (which can slow down your mail connections and use up your disk space allowance), we also recommend checking the box marked Remove from server after X days. Choose a number of days that's long enough that you'll be able to read the messages in your other mail program (or Webmail). Even using a large number such as 100 days is better than not checking this box.

5. Close the settings windows.
Click OK to close the "Internet E-mail Settings" window.
The "Change E-mail Account" screen will then be visible. Click Next, then Finish.
Outlook setup is complete
You're finished! From now on, any mail that arrives should stay on the server, and you should be able to see it in your other mail program or Webmail. (If you're using another mail program, you'll probably want to setup that program to leave a copy of your messages on the server, too.)