Hi, I came across https://github.com/aligrudi/neatmail#readme from knowing about the author's re-implementation of troff and thought its design might be of interest to the list, e.g. it seems one gets a scan listing and annotates it with actions.
-- Cheers, Ralph. https://plus.google.com/+RalphCorderoy -- nmh-workers https://lists.nongnu.org/mailman/listinfo/nmh-workers