12. Persuasion Skills
This is one a lot of people didn't see coming!
Experienced customer support personnel know that oftentimes, you will get messages in your inbox that are more about the curiosity of your company's product, rather than having problems with it.
(Especially true if your email is available on-site, like ours)
To truly take your customer service skills to the next level, you need to have some mastery of persuasion so that you can convince interested customers that your product is right for them (if it truly is).
It's not about making a sales pitch in each email, but it is about not letting potential customers slip away because you couldn't create a compelling message that your company's product is worth purchasing!