Close.io is a Customer Relationship Management (CRM) system that's available in several editions. The Basic Plan supports an unlimited number of contacts and leads. This plan also includes a two-way email channel that improves communication between a business and customers. The Professional Edition offers a bulk email tool that saves a lot of time and effort on direct communication with buyers and partners. For example, a template that already has some text can be quickly edited according to the recipients. Additionally, the Professional Edition allows businesses to monitor phone calls that are handled by customer service agents. If a caller cannot reach an agent, he or she might be directed to visit an online resolution center. A virtual help desk includes answers to common questions regarding technical glitches, shipping, pricing and other similar issues. For the ultimate performance, users can select the Business Plan that includes a voicemail system and many other enterprise tools.