notmuch: notmuch (fast mail indexer for maildir) notmuch: notmuch: Notmuch is an answer to Sup. Sup is a very good email program written notmuch: by William Morgan (and others) and is the direct inspiration for notmuch: Notmuch. Notmuch began as an effort to rewrite performance-critical notmuch: pieces of Sup in C rather than ruby. From there, it grew into notmuch: a separate project. One significant contribution Notmuch makes notmuch: compared to Sup is the separation of the indexer/searcher from notmuch: the user interface. (Notmuch provides a library interface so that notmuch: its indexing/searching/tagging features can be integrated into any notmuch: email program.)