If you forward all your work or school email to Gmail, you can use Multiple Inboxes to see your two accounts separately within the same browser window. Here's how:
3. Customize one of your multiple inboxes to show mail sent to your other address. To do this, go to the Multiple Inboxes tab under Settings and set up one of the panes to search for mail sent to your other address.
4. (Optional) Use a "custom from" address so that replies will be sent from Gmail but as if they're from your other account. This way, your coworkers or classmates won't know the difference.
I use Multiple Inboxes to keep track of email sent to my college alumni address which I forward to Gmail. I used to filter, label, and auto-archive all these messages (my alumni frisbee team listserve gets tons of mail), but found that I rarely looked at the relevant labels. Now with a separate "inbox" I can see them easily without cluttering my primary inbox.
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