display text/html by default

[David Belohrad]

Dear all,

could someone help:

when I open an email, it is automatically displayed as 'text/plain'. If
this mail has however CID attachments (pictures), they are not in this
view displayed by default. I have to manually switch to 'text/html' to
see those embedded pictures.

I'd like to display mail by default as 'text/html'. How can I tell
emacs notmuch to do so?

thanks
.d.