You probably already know that if you want to build a sustainable online income that you should be building an email list to remarket to. However, most people that have email lists are losing money each month and damaging their reputation in inboxes because of fake email addresses and unresponsive subscribers.
So, one of the things you should be doing regularly is cleaning your list to help filter out the garbage. To this you can use a service like BriteVerify, which is extremely affordable and well worth the price, considering doing so will help with deliverability and open rates in all your future campaigns.