A project access link is a super simple way to give someone access to a website or mockup project. Anyone who follows the link gets access to the comment interface!
No need to create any accounts or do any setup of any kind! When someone leaves their first comment, it prompts them for a name and email, and will remember them for 30 days. After 30 days, it will prompt them to enter a name or password again. No passwords or logins to remember. Easy-peasy!