I hate thunderbird (and its HTML-only emails)

Apparently, since Thunderbird 2.0, the user now has an easy way to choose to send messages as HTML-only emails, instead of the sane defaults of doing “text only” or “text + HTML”. As a result, lots of Thunderbird users now send HTML-only emails, which are a PITA to read with mutt.

Does someone know if there’s an open bug about reverting that change?

Does someone know of a good strategy to convert HTML-only emails to text emails, preferably pluggable into procmail, so it happens at delivery time? It’s how course possible to read HTML emails using an external HTML viewer, but I can’t find a way to reply to a “stripped” version of the messages.