Zopim is a great software tool that lets you observe who is on currently on your website and engage in a chat guiding your customer through the purchase process.
The features I like the best are the ability of customers to leave message and for you to set up automatic triggers, i.e., a welcome message to a new visitor, newsletter sign up or asking if them need help if the checkout process takes too long.
We highly recommend you try the 14 free trial and then subscribe to the monthly starting at $11 per month.
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