The way I can send my invoices by email with attachments of pdf format for customers who don't have access to internet. Also when they make changes or update their documents I receive an automatic notification so that the invoice doesn't get lost. That's all! Nothing at this time would like me to comment because everything works as expected. It is a very good solution if you need online invoicing software for many clients. As I mentioned before we use our own servers so there are not benefits related to Cloud Computing.
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