Link4 is an invoice delivery service specialising in securely delivering invoices directly into the accounting systems of small and medium businesses. Link4 is designed to add-on to your current cloud accounting software and enhance it's invoicing capabilities. No matter which cloud accounting software you are using, Link4 enables users to send invoices directly into their customer's cloud accounting software instantly. Link4 automates the invoicing process for SMBs saving them time and money, allowing them to focus more on other aspects of their business.