Select Standard for a quick setup or Custom if you wish to change the installation directory.
Because the official Thunderbird homepage now provides installers for Windows 10 and newer, you must use the Mozilla FTP Archive to find compatible legacy files.
Double-click the .exe file. If prompted by a security warning, click Run . thunderbird windows xp download
Finding a Thunderbird download for Windows XP requires navigating legacy archives, as modern versions of the software no longer support older operating systems. is the final version compatible with Windows XP. Where to Download Thunderbird for Windows XP
Windows XP Service Pack 3 (SP3) is highly recommended. While some older builds may run on SP2, the final installers generally require SP3. Processor: Pentium 4 or newer with SSE2 support. Memory: At least 1GB of RAM for stable performance. Storage: Approximately 200MB of free hard drive space. Installation Guide Select Standard for a quick setup or Custom
Some users find it easier to first install Thunderbird 38.5.0 and then use the built-in "Check for Updates" feature to reach the final supported version. System Requirements for XP
Thunderbird 52.9.1 (32-bit) is the absolute last release for XP. If prompted by a security warning, click Run
Once installed, launch the app and enter your name, email, and password. Thunderbird will attempt to automatically detect your server settings. Critical Security Warning System Requirements - Thunderbird