Not a bad start, but it could still use some work. When people sign up for something, they still have a lot of questions. Address those by including links to FA

Not a bad start, but it could still use some work. When people sign up for something, they still have a lot of questions. Address those by including links to FAQs or sending them an users manual. That will increase your numbers by a good amount. Plus, you can upsell without much problem. An email subject that tends to work well with this approach: "Here are some helpful links to get you started with $name."