Use the placeholder {invoice_link} to make it easy for customers to download receipts Include {transaction_id} for customer records and payment verification Thank customers using their name ({customer_name}) for a personal touch Mention {company_name} to reinforce your company branding Keep the tone warm and appreciative - this is a positive touchpoint Consider adding payment method details for accounting reference Include company contact information for billing questions Update emails if your company information changes Review emails periodically to ensure they still match your brand voice Test all placeholders with both full and partial payments