mkdir -p "$MAIL_DIR"/{cur,new,tmp}
notmuch insert < "$gen_msg_filename"
cur_msg_filename=$(notmuch search --output=files "subject:insert-subject")
mkdir -p "$MAIL_DIR"/{cur,new,tmp}
notmuch insert < "$gen_msg_filename"
cur_msg_filename=$(notmuch search --output=files "subject:insert-subject")