# tag all message from notmuch mailing list
notmuch tag +notmuch -- to:notmuch@notmuchmail.org
- # finally, retag all "new" messages s "inbox" and "unread"
+ # finally, retag all "new" messages "inbox" and "unread"
notmuch tag +inbox +unread -new -- tag:new
Since the post-processing is only acting on a few messages, it is