smd-push(1) on Linux
The text fd0e52d203d4, as Debian 9 (Stretch) shipped it.
syncs the remote mail dir letting the local one untouched
Flags it lists
-
--dry-run -
--no-delete -
--show-tags -
--template-only -
--verbose -
-d -
-n -
-s -
-t -
-v