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How to Protect Your Email with Password and Encryption in Windows

By , About.com Guide

Separate Windows Accounts are Not Enough

I guess you don't want other people who have access to your computer — legitimate access, of course, because they're family, friends and colleagues, for instance — to have access to the emails it holds as well.

If this is true you have, of course, set up a distinct Windows account for each user so that everybody can have their own wallpaper, and so that emails and documents are kept separate. This is very well and good, but it is not enough to protect your emails.

Keep Your Email Private in Windows

To keep your emails — even as files on the disk — private from the eyes of other users:

This prevents other users from all access to the folder. You mail is safe as long as nobody can log on to your Windows account.

Make Sure Automatic Windows Log-On is Not Enabled

For Windows to log on a particular user — you — when it starts up automatically is convenient, but is lets whoever restarts the computer get to your mail. Fortunately, you can disable that behavior:

  • Select Run... from the Start menu.
  • Type "control userpasswords2".
  • Click OK.
  • Make sure Users must enter a user name and password to use this computer. is checked on the Users tab.
  • Click OK.

Make Your Screen Saver Require a Password

Now let's make sure Windows logs you off (in a way) even when you don't. If somebody came by your computer while you are logged on but not there, they could comfortably access all your emails otherwise.

  • Click with the right mouse button somewhere on the Windows Desktop.
  • Select Properties from the menu.
  • Go to the Screen Saver tab.
  • Select any screen saver.
  • Make sure On resume, display Welcome screen or On resume, password protect (whichever option you have) is checked under Screen saver.
  • Click OK.

Encrypt Your Mail Files and Folders

If you could not make the files used by your email program private using the method above:

  • See if your email program allows you to move the files to a folder beneath "\Documents and Settings\[your user name]\".
  • Proceed with the method outlined above.

Should that not be possible, or if you want to be extra safe and encrypt the files on disk:

Remember that emails that are not themselves encrypted before they are sent can be intercepted and read. Protecting files on your disk only prevents others from accessing the mail as it is kept in your email program.

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