OptinMonster

OptinMonster started as an optin form builder and has grown into a full lead-capture suite. The toolbox includes slide-in popups, top-bar banners, inline forms, and their signature Exit-Intent technology that triggers when a visitor reaches to leave. The platform handles form analytics, segmentation, and delivery to your email provider, treating itself as a gateway to your email list.

Coaches see the most value in OptinMonster's ability to stop visitors from leaving: the Exit-Intent pop-up converts more people than standard sign-up forms, useful if you're driving traffic to a free course module or lead magnet. You'll still need an email service on the other end, but OptinMonster handles the hard part of actually getting people to enter their email address.