How to Change the Signature Font in Thunderbird 3.0

Written by leonardo r. grabkowski
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Mozilla Thunderbird is a mail client similar to Microsoft Outlook. It contains many of the same features, including the ability to manage multiple e-mail accounts and set custom signatures for each one. The signature editor does not contain a toolbar that lets you change fonts; however, you can use HTML to set a custom font if you want the signature to be displayed in a different font than the rest of the message.

Skill level:


  1. 1

    Open Mozilla Thunderbird, and click the "Tools" link on the top menu.

  2. 2

    Click on "Account Settings." Click on the email account you want to set the signature font for in the left sidebar.

  3. 3

    Move to the "Signature Text" section. Check the box next to "Use HTML."

  4. 4

    Type the following HTML code into the box:

    <p><font face="Garamond">Your signature text here</font></p>

  5. 5

    Replace "Garamond" with the font you want to use, and type your custom signature between the opening and closing tags. Click on "OK" to save the changes to your signature.

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