It connects to Mailster and Web 2.0 Directory plugins Your customers can subscribe to the newsletter, and partners lists at once. “Contributors” estampel “Tags” 1.1 “Requires at least” 5.7 Required: Mailster 2.4 https://www.gplplus.com/product/mailster-email-newsletter-plugin-for-wordpress/ and Web 2.0 Directory https://codecanyon.net/item/web-20-directory-plugin-for-wordpress/6463373