If you’re using any kind of form validation on your site, be sure to communicate input errors clearly. Let your users know why the form wasn’t submitted successfully. Rather than vague “All fields are required” error messaging, tell your users specifically what they missed or why their input wasn’t accepted. Did their phone number not have enough numbers? Were they missing the “.com” from their email address? Give clear instructions as to how to fix the problem and successfully resubmit their information.