A newsletter plugin for WordPress, MailPoet is meant to send beautiful emails that always make it to the inbox folder without fail.
It can be used to create attractive opt-in forms, collect emails, manage subscribers and send newsletters. It works wonders for a normal website/blog and even an e-commerce store, all thanks to their WooCommerce integration and abandoned cart email features.
MailPoet pays 20% for every sale you refer their way using your unique referral link. There are also banners that you can utilize to attract visitors from your blog.
You won’t have a hard time promoting this email service because it’s already used by over 300,000 websites, proven to deliver a satisfactory experience.