No. The confirmation email will increase the quality of your list member base, resulting in higher open rates and click-throughs. It will also eliminate the risk of your list getting sabotaged by someone falsifying addresses. We've seen this happen far too many times, even on retail, government, and non-profit lists, which is why we have taken steps to resolve potential issues before they become a problem. We realize that there are companies out there which do not require this, but you will find that the vast majority of them have their emails blocked by numerous ISPs.