Customer.guru is an easy-to-setup tool for measuring customer satisfaction using Net Promoter Score.Net Promoter Score is a customer loyalty metric introduced by Harvard Business Review in 2003. Since then, NPS has been widely adopted with more than two thirds of Fortune 1000 companies.The Net Promoter Score is calculated based on responses to a single question: How likely is it that you would recommend our company/product/service to a friend? On a 0 to 10 scale.Those who respond with a score of 9 to 10 are called Promoters, and are considered likely to exhibit value-creating behaviors, such as buying more, remaining customers for longer, and making more positive referrals to other potential customers.Customer.guru is dead simple to use:1. Customize our survey 2. Add e-mails of your customers 3. Track the results in realtime and improve your results over timeOur Slack integration allows you to see your new Customer.guru ratings in Slack in realtime!