Download //top\\ Thunderbird 38.1 -

This version is one of the last to support older operating systems like Mac OS X 10.6 (Snow Leopard) and early Windows versions with lower RAM requirements.

Downloading is often a necessary step for users who need a specific bridge version to migrate older email profiles or for those running legacy hardware. Released in mid-2015, this version marked a major milestone by introducing native features like GMail OAuth2 support and the integration of the Lightning calendar. Why Download Thunderbird 38.1?

How to download older versions of Thunderbird - Mozilla Support download thunderbird 38.1

If you are upgrading from a very old version (like 31.x), experts recommend using Thunderbird 38 as a "stepping stone" to ensure your email database and settings migrate correctly to modern versions.

While most users should aim for the latest release for security, version 38.1 remains relevant for several scenarios: This version is one of the last to

This specific update (38.1) resolved critical "deadlock" issues where the app would hang while checking for POP3 messages on slow servers.

Prior to this series, the "Lightning" calendar was an add-on; version 38.1 made it a core part of the installation. Why Download Thunderbird 38

It was the first version to properly support OAuth2 authentication for Google accounts, meaning you don't have to enable "less secure apps" in your Google settings to sync mail. Key Features of Version 38.1