Mozilla Thunderbird

Mozilla Productivity

Works on Arm x86 emulation

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Mozilla Thunderbird runs on Windows on Arm through built-in x86 emulation (Prism).

Arm support since version 115.7.0.0. Source record updated: Mar 2, 2026.

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Publisher: Mozilla
Type: x86 emulation
Version: 115.7.0.0
Source: Qualcomm · Source
Data updated: Mar 2, 2026

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Evidence and dates

Data updated: Mar 2, 2026
Source record updated: Mar 2, 2026
Device test date: Not recorded

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What this means

Install choice

Mozilla Thunderbird runs through Prism. Use the current x64 or x86 build, then test heavy workflows such as sync, export, plug-ins and background services.

Read the Prism guide →

Business rollout checks

Mozilla Thunderbird belongs to a productivity or business workflow. For a team rollout, test sign-in, sync, printing, add-ins, updates and uninstall before buying at scale.

Read the work software checklist →

Next step

Mozilla Thunderbird is one of the compatible Productivity titles. Compare it with other apps in the same category before standardizing a setup.

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Data freshness

Qualcomm · Source · Source record updated: Mar 2, 2026.

Mozilla Thunderbird on Windows on Arm — FAQ

Does Mozilla Thunderbird work on Windows on Arm (Snapdragon X)?

Mozilla Thunderbird runs on Windows on Arm through built-in x86 emulation (Prism). Arm support since version 115.7.0.0. Source record updated: Mar 2, 2026.

Is Mozilla Thunderbird native Arm64 or emulated?

Mozilla Thunderbird runs through Prism, the x86 emulation layer built into Windows 11 on Arm. Most apps work well under emulation with a modest performance overhead compared to native Arm64 builds.

Does Mozilla Thunderbird work on Snapdragon X2 Elite or NVIDIA RTX Spark?

Mozilla Thunderbird is listed as compatible with Windows on Arm, so it is a candidate for Snapdragon X2 Elite and NVIDIA RTX Spark PCs. Still test device-specific pieces such as drivers, plug-ins, GPU acceleration, anti-cheat and background services.