Run:
sudo update-alternatives \
--install $(whence x-terminal-emulator) \
x-terminal-emulator \
$(whence urxvtcd) \
50 \
--slave /usr/share/man/man1/x-terminal-emulator.1.gz \
x-terminal-emulator.1.gz \
/usr/share/man/man1/urxvtcd.1.gz
sudo update-alternatives --set x-terminal-emulator $(whence urxvtcd)
sudo port install mutt +db4
mkdir -p ~/.cache/mutt