Note: Make sure you are using either Google Chrome or Firefox during the installation process.
Create your email signature on NEWOLDSTAMP and follow these simple steps to install it in Thunderbird.
After you finish creating your email signature, click “Save and Install” button under the signature preview:
Or if you have saved your signature priorly, hover over your signature on the dashboard and click “Use” button. Choose the way you want to install the signature on the pop-up window:
Select the Thunderbird icon in the list of email clients.
Scroll down the Signature Preview and Click the “Copy and Proceed” button, or download the HTML file.
Open your Thunderbird App on your computer. Click Menu Icon in the top-right hand corner, hover over the Options in the menu and select Account Settings option.
Put a check mark next to “Use HTML” option and Paste the signature into the “Signature text” field.
Alternatively, select the “Attach the signature from a file instead” and click “Choose”. Select the HTML file downloaded from NEWOLDSTAMP and confirm the changes.
Save the changes and compose a new message to see your new sigature in action.
Congratulations! Now you will see your new signature in every email you send with Thunderbird.