Hi, I'm not sure what's tripping me up here. ellen% notmuch --version notmuch 0.29.3 ellen% notmuch config set index.headers.Blahonga MIME-Version ellen% notmuch config list|grep Blahonga index.headers.Blahonga=MIME-Version ellen% notmuch reindex date:-7_days.. ellen% notmuch count 'Blahonga:"1.0"' 0 ellen% notmuch search --limit=1 --output=files date:today |xargs grep ^MIME-Version: MIME-Version: 1.0 The "MIME-Version" is just an example, what I really want to search is "X-Spam" (which not all emails in the database have, but the ones I do, I want to find especially if their value is "Yes"). Sandra PS I've loved notmuch since 2009. Best app of all time♥ _______________________________________________ notmuch mailing list -- notmuch@notmuchmail.org To unsubscribe send an email to notmuch-leave@notmuchmail.org