What does Aggressive aggressiveness do?



When Aggressive is selected as the Aggressiveness Option, mailfloss will do a deep clean on your email list. Anything that looks remotely bad will be flossed away. Choose this to maximize email deliverability, but only if you are ok with the consequences. 

There will likely be more false positives if your email list is new, and fewer false positives with older lists but they'll almost always be there. We recommend this option only if your list is really old or you want a really deep clean.

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