Open Outlook Express (Start->All Programs->Outlook Express)

Once Outlook Express is open click on Create Mail

A new message will open up

At the menu click on Format->Plain Text (To create a plain text message or to format the current mail to be plain text)

A warning will popup just click on ‘OK’

Now your message will be send using the Plain Text format
NOTE: To send mail permanently using plain text following the steps below
Once in Outlook Express click on **Tools->Options
**

Click on the ‘Send’ tab and under Mail Sending Format select Plain Text

Click on ‘OK’ to save your settings, now every new mail will be send using Plain Text