...
Be sure to check the admin email for the account, which is listed under Settings > General > E-mail Address. This email is used for a number of purposes and is essential for any sites using the Gravity Forms plugin. The admin email receives all form results and notifications pertaining to Gravity Forms.
Check for Broken Links
Go to your dashboard and check to see if there are any broken links. If there are, be sure to repair them before you go live.
Accessibility Check
...