Is it possible to extract or match email addresses from a petition's public signature list?

Hi everyone,I am looking for technical insights regarding data retrieval from petition platforms (like Change.org).As you know, when a petition is active, the only publicly visible data points for the signatories are their First Name, Last Name, and City/Location. The platform itself strictly protects and hides the actual email addresses of the supporters.Given these constraints, I would like to know if there is any known technical method, tool, or workflow that allows someone to uncover or retrieve the email addresses associated with these specific supporters.