Version 0.38 is available upstream. Please consider updating!
It seems that version 0.38 is available upstream, while the latest version in the Gentoo tree is 0.37. You think this warning is false? Read more about it here.
Notmuch is a system for indexing, searching, reading, and tagging large
collections of email messages in maildir or mh format. It uses the
Xapian library to provide fast, full-text search with a convenient
search syntax.