Every "how long is this kept" setting was spread over four pages of
fields named after the config, plus log files on the Hardening page.
Each retention page now opens with all of them as sentences:
- in people's mailboxes: empty Trash and Junk after, clear handled
calendar invitations after, forget share notices after, forget the
sending status of sent mail after;
- getting deleted things back: deleted items and deleted accounts;
- the server's own records: delivery history, charts' history, DMARC
and TLS reports from other servers, and old log files.
Each has a number and unit (or its own never / off / forever), its
default beneath, and an unsaved mark until the changes are saved
together. It says that mail under a legal hold is kept whatever these
say. The page's own settings (schedules and the like) are folded
underneath and reload after a save.
jcoffey-dev