OptinMonster
OptinMonster is one of the best newsletter plugins or lead generation software for small businesses and marketing agencies, bloggers, eCommerce sites, and more. It's one of those tools that you need if you're serious about improving your website conversions, reducing cart abandonment, and growing your email list.
This integration tool allows you to reach thousands of potential customers with your products and services, so you can expand your business. It is extremely user-friendly. This means you don’t need to hire a developer to build an effective form.
MailPoet
MailPoet is a powerful WordPress plugin that creates, manages, and grows your email campaigns without having to leave your WordPress dashboard. It's been trusted and used by over 500,000 WordPress websites since 2011.
The free plan allows you to collect up to 1,000 subscribers and offers the features most small businesses need to get started with email marketing but the paid plan gives you more functionality and more customization to create the most powerful and effective campaign.
Newsletter
Newsletter is the easiest to use and most reliable, email marketing plugin for your WordPress blog. It’s an effective way to build and send professional-looking email newsletters. It also allows you to keep track of your email marketing campaigns, and measure results.
It has over 300,000 active users, has provided all the tools needed for full compliance with the new GDPR regulations and they are always improving the platform to meet new use case scenarios.
WPForms
WPForms is a drag & drop WordPress form builder that's easy to use and it offers tons of free tools that make creating your website a breeze. It’s easy to build forms with as they already have many pre-built templates which you can use to create your form quickly.
It helps you to build a responsive contact form that makes it easy to keep track of and send messages to your customers on any device while keeping a beautiful design and consistent look across the web.
Newsletter Glue
Newsletter Glue helps you save time, so you can spend more time creating useful content. It helps you get up and running quickly, so you can get back to making your business successful!
What’s really cool about this tool is the fact that there are so many different layout options which makes it possible with its flexibility that you can do almost anything on your blog or newsletter by using the show and hide block feature.