This may sound counterintuitive, but cleaning out your lists, a.k.a. list hygiene, by removing contacts who have high bounce rates or who don't open your emails will eventually increase email open and conversion rates while saving money in the long run. This is because you're only targeting interested contacts who are more active than those who haven't opened one of your emails in more than six months. It also keeps you in good standing with ISPs, because you will be receiving fewer spam complaints. Learn more