Multilingual. 32bit and 64bit.

The Bat! is a popular email client that allows to work with unlimited number of the mailboxes. Furthermore, it has powerful sorting filters, fully customizable message templates, Mail Dispatcher and many more other features. The main task of the program is to secure protection of the correspondence from data theft and monitoring by third parties. The Bat! is able to handle an unlimited number of e-mail accounts and to process and store an unlimited number of messages.

https://www.ritlabs.com