thread:XXX 2001-01-05 [1/1] Notmuch Test Suite; Two (inbox tag1 tag2 unread)
thread:XXX 2001-01-05 [1/1] Notmuch Test Suite; Three (inbox tag3 unread)"
thread:XXX 2001-01-05 [1/1] Notmuch Test Suite; Two (inbox tag1 tag2 unread)
thread:XXX 2001-01-05 [1/1] Notmuch Test Suite; Three (inbox tag3 unread)"