Email signatures are an easy way to automatically identify or sign yourself in an email message. It's also a great way to promote a company or product. The Mozilla Thunderbird email client makes it easy to add an image to your signature.

You can edit your Thunderbird email signature each time you compose a new message. This means you can change or remove your signature image for different scenarios.

With Thunderbird open and ready to use, follow these steps:

Compose a new, blank message with HTML formatting. If a signature appears when you write a new message, delete everything in the body of the message.