Signature Switch is a Thunderbird extension that switches the signature on/off or choose a new one from your predefined set.
Additional features include the support of fortune-cookie-files and automatic switching based on recipients.
How to Install in Thunderbird:
1. Right-click the link below and choose "Save Link As..." to download and save the file to your hard disk.
2. In Mozilla Thunderbird, open Add-ons from the Tools menu.
3. Click the Install button, and locate/select the file you downloaded and click "OK".
· Mozilla Thunderbird