I have collected 12,384 emails from website visitors and increased my conversions by 16%
I like how effective it is at engaging my website visitors to leave their email address in the website popup before leaving the website. It has a lot of settings which I have used to customize it to fit my brand. It's really affordable as well and it's pretty straightforward.
It would be good if it could integrate directly with MailChimp instead of having to go through Zapier, but I hear that's something that is being worked on.