Mozilla Thunderbird 78.12.0 is a stable, feature-rich version of the renowned open-source email client. Released on , it serves as a critical maintenance and security update within the 78.x branch. This version is particularly valued by users who prefer a classic, highly customisable interface with integrated calendar and chat features. Key Features of Thunderbird 78.12.0
This version respects system-wide dark mode settings on Windows and macOS, reducing eye strain. download thunderbird 78.12.0
The Lightning calendar, previously an add-on, became a core part of the application. Mozilla Thunderbird 78
Recipient fields (To, Cc, Bcc) were updated to use a space-saving "pill" layout rather than taking up one line per address. Mozilla Thunderbird 78.12.0 is a stable