Thank Them, and Ask Them to Thank You _ must be sincere Money is often a touchy subject, so politeness about it is a good idea. Your clients are paying you money that they've earned with blood, sweat and tears, so let them know you appreciate it. You should also invite them to contact you if they have any questions and, more importantly, make it clear that you appreciate their present (and future) business. Some people also welcome testimonials; for example, by adding, "Let us know how we did. Write a testimonial and sent to... " If you're building your website's testimonials page or want to complete the feedback loop, this is a great way to get clients to give feedback on your work. If they have suggestions for making the process smoother, it's also a great opportunity for you to improve.
What is an Electronic Invoices or e_Invoices _ An electronic invoice (also called an e_invoice or eBill) is the result of a billing method that doesn't require a paper copy as a backup in order to demonstrate its authenticity. For this reason, an electronic invoice functions as a software_generated file, which compiles the information related to a commercial transaction, its payment and corresponding tax obligations.