Hey all, Looking for a bit of help here. Any help will be greatly appreciated. I have an opt-in email list of roughly 25,000. Problem is a lot of these emails are not verified. I am about to start taking advantage of these opt-ins by sending out material through Mail Chimp. As a lot of these emails aren't verified, I am a little concerned about the bounce rate I will receive (as Mail Chimp only allows a 5% bounce rate). I was wondering if anyone knew of a free tool that allows you to check whether these emails will bounce or not. Any help is appreciated. Cheers