Mailbox over the limit

QUESTION:
I started getting notices that my mailbox is over it’s limit. I have archived items over 90 days. What else can I do to stop these messages?
Isn’t this pretty much the same as archiving to my hard drive?
I use three months.
ANSWER:
You can create an Outlook Personal Folder (PST file) where you can move messages to reduce the size of your “Mailbox.” To do that, from Outlook’s main screen, choose File, New, Outlook Data File, click OK to accept all the default values after that. Then create folders under this Personal Folder and move any messages you want from your “Mailbox - [firstname lastname]” folders to your “Personal Folders”. Just keep in mind that these “Personal Folders” don’t get backed up every night like your Mailbox does. So, if you lose the laptop or its hard drive dies, you lose those messages unless you’ve made another back up somewhere else.
Yes, but you can be more specific about which messages you move to the hard drive, as opposed to “everything older than 6 months” etc.
OK. But my way, if you have, for instance, a week-old email that you know has a huge attachment, you can drag and drop just THAT email into your personal folder. It just gives you more flexibility.