You can manage email frequency under Credit Control > Settings

Reminder templates - Reminders 1 through 5 are enabled as default - each reminder template can be disabled by unticking ‘Enable this template’:

If your customer is due to receive Reminder emails for two or more invoices on the same day (i.e. multiple invoices fall X days late on the same day), then instead of sending multiple separate Reminders, Satago will send one Grouped Reminder to the customer. By default, Grouped Reminders are switched ON.

The Grouped Reminder template is found on the Invoice Reminder templates page. To switch Grouped Reminders On or OFF, tick or untick the Group reminders scheduled for same date box. (Don't forget to click Save at the bottom of the page).

Please note:

• Grouped Reminders will reduce the severity of the wording in the Reminders because of the statement-like frame.

• If a customer would be due to receive an invoice Reminder on the same day as a Statement, then only the Statement will be sent.
  

Grouped Thank You emails work in the same way as Grouped Reminders, except that Grouped Thank You emails will still be sent on the same day as a Statement.