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MS Outlook 2010 users should also be aware that .pst files should not exceed 2GB in size. If your email archives are becoming too large you should break them up to keep these pst files under 2GB. Some instructions from Microsoft on how to manually manage this can be found here:
http://office.microsoft.com/en-us/outlook-help/archive-items-manually-HA010355564.aspx
Storing your emails- what NOT to do
Users should never never NEVER store their emails in the trash. I can not tell you how many times this has ended badly and how much of a truly bad, awful idea this is. It is absolutely CRITICAL that if you have emails that you think you might need, create a folder called "Unsorted" or "Not Trash" so you can put them in for later viewing. NEVER store email in the trash. You don't store food, or anything you may want in the trash so don't put your emails there either.
Managing Your Email Quota
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