Notmuch quick cheatsheet
Implicit OR/AND subj:A subj:B from:C is equivalent to subj:A or subj:B and from:C. That’s because subj: is a common prefix (so OR is used). Otherwise, AND is used. Dates date:today becomes date:today..today in ranges, date:<since>..<until>, the <since> means “to the earliest time described (e.g. first instant of the day for today)” and until, “the latest time described”. can use 2d meaning “two days ago”, 2026-01 meaining “January 2026”