Vero Newsletters - The first "baseless" email marketing tool.
Kingmailer - Kingmailer helps you send, receive and route/forward emails.
Google Sheets Email Marketing - Email automation and validations directly from Google Sheets
Flexmail Solution - Professional email marketing with powerful and easy-to-use features
Opens Are Dead - Everything email marketers need to get ready for iOS 15
Dragon Responsive Email Designer - Dragon Email Designer provides an intuitive drag and drop newsletter design tool.