The WordPress Mass Email Sender Plugin by WPMU DEV
This plugin helps to send emails to every user according to the requirement on a multisite network. It is easy to use and integrated with shortcodes. Users can unsubscribe to the mailing list anytime with just one click. It even has an option to send a test email, so that you can check your messages before sending to your entire network.

Gostudy – Education WordPress Theme
Gostudy is a solution for creating Educational Websites, Selling Online Courses, University, College, School, Training Center, E-Learning, Courses Tutorials, Education Center, Workshop, kindergarten, Course Hub, or any kind of Educational institution. Gostudy education WordPress theme is developed as a Learning Management System for Courses Listing Platform like Udemy, Coursera, Edx, Training Center, Courses Hub, language school, eLearning Business, learning courses, music education school, dance academy and driving school College, Academy, University or School.