Hi, could you provide a little more context about where you see these email addresses? For example, when when you click into a form field, does Firefox shows multiple email address options? Firefox has both a form memory feature AND a saved login feature. If the email addresses are paired with passwords, most likely they are saved logins. Let's start here: For Mac/Linux/Windows: [[Password Manager - Remember, delete and edit logins and passwords in Firefox]] For iPad/iPhone: [[Manage saved passwords in Firefox for iOS]] For Android: [[Manage saved passwords in Firefox for Android]]