What does Normal aggressiveness do?

When Normal is selected in the Aggressiveness tab, mailfloss will floss for nonexistent, available, banned, deactivated, inbox_full, illegit, invalid, bounced, and disposable email addresses.

This is a sensible option and the one we usually recommend for most users.

Remember that there's a Help me decide link in the Aggressiveness tab that you can click on to help you decide which mode option is the best for your contacts list.