In Thunderbird I can set a signature, which can be either in HTML format or in plain text. However, I sometimes write HTML mails and sometimes plain text mails (setting the format with Shift-Click on the "Write" button).
Is there a way to specify two different signatures (one in HTML and one in plain text), and have Thunderbird automatically pick the correct one depending on the mail format?
I know that TB will convert plain text signatures to HTML and vice-versa if necessary, but this gives bad results in my case (plain text signatures converted to HTML will lack the formatting my company prescribes for signatures; and HTML signatures converted to plain text will have additional asterisks that I don't want).