Mozilla Thunderbird Beta for Mac

Mozilla Thunderbird Beta is a customizable email client suited to users who want to organize their mail and communication style according to their own habits. It primarily addresses the need to send and receive email day to day and to manage multiple email accounts, while offering a more flexible experience than webmail. Compared with the stable release, the Beta version brings new features and improvements earlier, making it suitable for users willing to try things first and able to accept occasional instability. The interface is graphical, so the learning curve is not steep and ordinary users can adapt fairly quickly. If you need a desktop tool that can be freely adjusted and focuses on email handling, it can be considered one of the candidates.