Download Old Versions of Thunderbird: 102.15.1 - 91.12.0 - 78.14.0 - 68.12.1 - 45.8.0 - 3.1.20

If you experience any compatibility issues with Thunderbird for Mac, consider downloading one of the older versions of Thunderbird. MacUpdate stores previous versions of Thunderbird for you since v. 3.1.20.