The following commands make an effective workaround. Simply replace the `akonadi_html_to_text` tool with one that is correct.
apt install html2text dpkg-divert --add --rename --divert /usr/bin/akonadi_html_to_text.original / usr/bin/akonadi_html_to_text update-alternatives --install /usr/bin/akonadi_html_to_text akonadi_html_to_text /usr/bin/html2text 1
