When visitors leave comments on your website, you'll be able to see each visitor's email address alongside their comment. Don't worry - these are only visible to you when you're logged in as an administrator! Other visitors won't be shown this information.
Sometimes, email addresses may still be visible for a short time after logging out of an administrator account. This is simply a residual effect of browser cookies doing their work, and only occurs on the administrator's (your) computer.
✔ Tip: Email addresses can be useful if a visitor asks a question when leaving a comment on your website. You can use the contact information to answer their question.