The Bat! is an email program for Windows that protects the correspondence and empowers the users to handle large amounts of emails quickly and efficiently. Developed by RITLabs
License: Commercial
Claws Mail is an open-source, customizable email client that is lightweight and fast but may lack modern features and has a steep learning curve. The Bat, on the other hand, is a powerful, feature-rich email client with robust security and ease of use but comes at a cost and can be resource-intensive.