Creating Email Signature in Mozilla Tunderbird Mail App (ver. 115.4.3)

This short video covers 2 methods to create an HTML based email signature in Mozilla Thunderbird. First one using an add-on called "Signature Switch", the second method uses the standard way without the use of any tools.
Unfortunately, YT didn't allow me to paste the HTML code. So, if you need to, please pause the video to write the sample code carefully then modify it according to your needs.
Thanks.