mutt-kz 1.5.23.1-6build2 (ppc64el binary) in ubuntu xenial

 Mutt-kz is a fork of Mutt, a sophisticated text-based Mail User Agent, which
 additionally provides:
 .
  * Notmuch integration: virtual folders, labels handling, searches, etc.
  * sidebar: list mailboxes (with new mail) in a separate column on screen
  * index-color: individual tag coloring
 .
 Mutt-kz, in comparison with notmuch-mutt, does not populates directories to
 emulate virtual folders. As mutt-kz is linked with libnotmuch, the virtual
 folders are part of the index handling. Also it can add, remove and modify
 notmuch tags (labels).