Don’t let e-mail stack up. Like a sloppy, paper-strewn desk, too many pending messages will induce stress. Instead, process every incoming e-mail by categorizing it and depositing it in an appropriate folder. Your goal: Delete, file or reply to every e-mail as soon as you read it. By building a folder of all related emails, you wind up with a useful historical record of how a project evolved. When you complete the job, you can condense all the e-mails into a succinct resource guide or reference list for your archives.