Post B9YCBAQyhqiiYSd7ho by alternativeto@mas.to
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 (DIR) Post #B9YCBAQyhqiiYSd7ho by alternativeto@mas.to
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       Thunderbird 154.0 introduces system tray mode, attachment previews on macOS, Microsoft 365 integration, and several stability and security updates.https://alternativeto.net/news/2026/8/thunderbird-154-0-adds-system-tray-mode-macos-previews-and-microsoft-365-updates/