Add a Background Image to a Message in Mozilla Thunderbird
To add a background image to a message in Mozilla Thunderbird:
- Create a new message in Thunderbird.
- Select Options | Format | Auto-Detect from the message's menu.
- Click in the message body.
- Select Format | Page Colors and Background... from the menu.
- Click Choose File... under Background Image:.
- Select the desired file and click Open.
- Click OK.
