Privy - 98% of People Who Visit Your Site Never Convert. Capture more emails, & improve site conversion, and grow online sales with Privy. Create free account today!

Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.

Hello Bar - Hello Bar, the simplest way to grow your email list. Have your opt-in live in minutes. No developer required.

LeadMaster - The LeadMaster LeadMasterCRM All-in-One solution includes: marketing automation, lead management, email marketing, website integration & much more.

Rapidology - Create beautiful email opt-in forms, popups, and widgets

Elucify - A completely free software tool that uses crowdsourced data to find business email addresses