Do you know how to write an invoice via email? See our comprehensive guide to find out what information you need to include and view our template.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. Send professional invoice email to your clients with this comprehensive guide. The best legal invoice emails have defined legal billing guidelines and payment details. Use these tips to write a legal invoice templates. Invoice emails should be clear, concise, and easy for the client to understand. Just customize the images, headings, and CTAs for your brand, and hit send in a few minutes! Browse the Template Library. 1. Please submit one email for each property request.