view html mail in mutt, with the following settings:

in ~/.mailcap:

#to show html as text within mutt
text/html; lynx -dump -force_html %s; copiousoutput

and in ~/.muttrc

auto_view text/html

with this, html mail will be shown in mutt itself, rather than viewed externally with lynx. if you reply to such a message, the text is quoted as plain text.