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készítette: Miguel Dias, aug. 18, 2026 ·

This standalone add-on appears to install and then immediately remove itself from Thunderbird 153.

This is by design. THIS ADD-ON is NOT for Thunderbird 153 and above.

The Thunderbird Pro add-on bundles Thundermail, Appointment, and Send together, and as of Thunderbird 153, all three are now built directly into Thunderbird itself.

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készítette: priyank sharma, aug. 14, 2026 ·

Thunderbird Mail is overall a very nice and reliable email client. However, I noticed a few design issues that could be improved:

Background image coverage: On a 4K screen, the background image does not stretch wide enough, leaving the left top and bottom corners with a black background. It would look cleaner if the fallback was at least a solid beige color rather than black.

Dark Mode integration: It would be great if Thunderbird could react to the operating system’s Dark Mode setting (Ubuntu in my case). This would make the interface more consistent with the rest of the desktop environment.

Despite these minor issues, Thunderbird continues to be a strong, dependable mail client. Thanks to the developers for their hard work — keep it up!