Want to know how to write an email with an invoice attached? Read on for our top tips, as well as a sample invoice email you can use for your customers.You'll learn essential tips to write the best invoice emails and provide 6 invoice business email templates and a template for you to use. Create and send invoices as a PDF attachment using over 100 professional invoice templates. Learn how to write invoice reminder emails and use these templates to ease the anxiety of asking your customers for timely invoice payment. Use this invoice email template to write and send invoices that are straightforward and easy to understand, making it easier for you to get paid on time. Write professional invoice emails to encourage fast payment for client projects and services. Free invoice email templates, tools, and tips from Bonsai. Invoice emails should be clear, concise, and easy for the client to understand. Tired of sending invoices and being unattended?