I was reviewing reminder errors and noted that on one of our staff accounts (someone had been testing)

A reminder for flea and tick was generated the reminder has 2 reminders

at 0 days -> Rule 1 SMS, RULE 2 Email

In this case the email got sent because there is no phone number

at +7days -> Rule 1 List

This failed - no matching customer contacts.  The customer has no phone and no address.  just email.

I think that LIST should not really fail. I mean I agree its hard to call someone with no displayed phone or address.  but still a failure is probably overkill