[Koha] Overdue notices

[Cab Vinton]

I have a few questions about how others are handling overdue notices w/ Koha 3.

If you're using Koha to send overdue notices via email, how do you
keep track of overdues where the patron has not provided an email
address?

If an email address is no longer valid, do returned messages get
bounced to the administrator?

Any other tips on handling overdues?

Many thanks,

Cab Vinton, Director
Sanbornton Public Library
Sanbornton, NH