The Koha pages don't configure email. They should.
Created attachment 2534 [details] [review] proposed patch This is a patch that implements the various functions and cronjobs needed for email, and fines etc. calculations. I'm going to leave it here for a few days in case someone wants to try it out while I give it some testing locally.
Created attachment 2585 [details] [review] proposed patch This patch has been tested for a while locally and looks good.
*** Bug 4872 has been marked as a duplicate of this bug. ***
Patch in master