The 2.5 version of Thunderbird Viewer Software is available as a free download on our software library. This download was scanned by our built-in antivirus and was rated as safe. This free tool was originally designed by FreeViewerTool. The size of the latest installation package available is 7.9 MB.
From the developer:
Mozilla Thunderbird is used by millions of users worldwide because it is an email application that provides various features like sending and receiving email messages, contact management, and calendar management. The Thunderbird email client is an open-source email application, and users can easily download it and manage their emails and other stuff on their local computers.
You may want to check out more software, such as PST Viewer Software, OST Viewer Software or KDETools PST to MBOX Software, which might be similar to Thunderbird Viewer Software.