Yoast - Yoast offers plugins to improve SEO and optimize web sites and blogs.
POPUPSMART - A no-code tool to increase e-commerce sales, build email lists and engage with your visitors in just 5-minutes.
Jackmail - A newsletter plugin for Wordpress.
OptinMonster - OptinMonster helps to convert abandoning website visitors into subscribers and customers.
Wordfence - Comprehensive security plugin for WordPress.
Sleeknote - Set up lead capture forms on your website in minutes. No coding required. Sync your new email leads with your favorite email service provider. Try for free.