Email Marketing is nothing but sending emails to your audience. This helps you to create a good conversation between them.
Why you need email marketing Tools?
For example: You have 100 audience, then you need to send email to 100 members. You can use gmail also. But you need to forward to other members.
At the same time, you cannot create a good email template using Gmail or outlook. Here in email marketing apps you can also group your audience.
For example, in 100 audience only 30 need WordPress tutorials and other may need other updates. For that you need some email marketing tools.
Types of Email Send:
Broadcast
Signup
Popup
Contact Form
Landing Pages
Promotional Email
Review Email
and more
There are many email marketing tools available for both free and premium based on the number of audience. At the same time, there are some email marketing tools available for creating popups, welcome mat, spin wheel and more.