Mozilla Thunderbird

Mozilla Productivity

Works on Arm x86 emulation

Get this app ↗

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

Arm support since version 115.7.0.0. Last verified on Mar 2, 2026.

Your Arm PC

Pick your Arm PC above to see what this means for your machine.

Pick your device for a personalized verdict — saved in this browser.

Publisher: Mozilla
Type: x86 emulation
Version: 115.7.0.0
Validation: Verified by Qualcomm
Last Updated: Mar 2, 2026

Report an update

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.

Browse the category →

Data freshness

This entry is listed as Verified by Qualcomm and was last updated on Mar 2, 2026. Use the report link above if a newer vendor build changes the result.

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. Last verified on 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.