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Step 1
Open Outlook. Click on the "Tools" menu and then click on "Options."
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Step 2
Click on the "Mail Format" tab. In the "Message Format" section, click on the to the dropdown box that is next to the text: "Send in this Message Format."
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Step 3
Select the option "Plain Text" from the drop-down menu.
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Step 1
Click on "Format" in the toolbar menu, from the email message that you're composing. Click on "Plain Text" from the dropdown menu.
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Step 2
Click "Yes" when you receive a warning that changing the formatting of this message from HTML to plain text will remove all the existing formatting.
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Step 3
Finish composing your email and send.
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Step 1
Open your Yahoo email application and log in.
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Step 2
Click on the "Options" link in the upper right hand corner. Click on the "General Preferences" link (It's in the middle column labeled "Management").
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Step 3
In the "Composing Emails" section, check the "Compose messages as plain text" option.
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Step 1
Click on the "Plain Text" link in the upper right hand corner, right next to the subject box.
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Step 2
Click "Yes" when you receive a warning that all formatting of this message will be lost.
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Step 3
Finish composing your email and send.
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Step 1
Click on "Compose" in the left-hand menu.
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Step 2
Click on the blue link right above the text entry box that reads "Plain text." This will configure Gmail to format and send your email message in plain text.
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Step 3
Finish composing your email and send.
