Outlook 2010

• 1). Begin creating a new message, and then open the "Message" tab at the top of the screen.
  
  
• 2). Click the "Signature" icon, and then choose the "Signature" option. A new window opens.
  
  
• 3). Click "New" beneath the panel in the upper left corner of the new window. Name the signature "Confidentiality Notice."
  
  
• 4). Click on "Confidentiality Notice" in the upper left panel, and then add the text of your notice to the box in the lower half of the window.
  
  
• 5). Select which email account you want to use the signature with in the "E-mail Account" field, and then click "OK" to save the notice.
  
  

Thunderbird

• 1). Open Thunderbird. Click "Tools," and then "Account Settings."
  
  
• 2). Click the name of your email account in the navigation column.
  
  
• 3). Type your confidentiality notice in the "Signature text" field in the middle of the window.
  
  
• 4). Click "OK."
  
  

Gmail

• 1). Open a Web browser and log in to your Gmail account.
  
  
• 2). Click the image of the gear at the top of the screen to open Gmail's settings menu. Click "Mail Settings." The Mail Settings page opens, with the General tab selected.
  
  
• 3). Scroll down the page until you reach the "Signature" section of the General tab.
  
  
• 4). Select the radio button next to your Gmail address. Enter your confidentiality notice into the field provided.
  
  
• 5). Click "Save Changes" at the bottom of the page.