Reminder Email Rules

There needs to be more rules when setting up automated reminder emails to customers.
For starters, pro-forma customers are getting the emails through that have a credit limit in sage of £0.00 and the payment terms text as 'Pro-forma' and payment due days set to 0 also.

These types of customers do not need to have remidners as their invocies are already paid.

The reminders also send even if there is a payment on account to allocate to outstanding invoices and the account balance is zero.

If the system could more intelligently decide which email to send then that would be great. Or if additional settings can be in place to prevent zero balance accounts from receiving the emails, or if the system can look to the payment due days and credit limit fields to verify that the invoices would be overdue then that is ideal