How to I send my Jotform to a customer via email?

This guide will help you to share the form via email: https://www.jotform.com/help/303-How-to-Send-a-Form-via-Email 

Alternatively, you may also copy the form URL and share it using your own email client as if you were sending a regular email. This guide will help you to get the form URL: https://www.jotform.com/help/401-Where-to-Find-My-Form-URL

I hope this helps.