How To Write A Collections Email. Invoices that have aged beyond two weeks are becoming a serious risk. The ultimatum collection letter needs to state the specific action you will take if the customer does not send payment by a certain date.

According to our records, you owe {company name} a sum of {overdue amount} for {name of product provided or service rendered}. The sample email is written to welcome and establish credit terms with the customer. We have emailed a detailed copy of your account statements.