My user account on linux gets some Cron Jobs among mail from humans. I don’t want to see the cron messages.

How can I script it so they are moved out of the “inbox” view (for example, on Squirrel Mail or my mobile client)?

I can grep for root@<domain> (Cron Daemon) to find the files that are emails from Cron. But I don’t know how to actually process them from here.

Edit: they are using dovecot here, in case that makes a difference. Messages appear as files in the format:
1696857026.V902I580559fM559719.<domain>.de:2,

Edit 2: I have learned that the trailing S can be appended to a filename to mark it as read (or Seen), so I just need to know how to move it from the inbox to somewhere safe now.