These are the permanent download links for the latest Thunderbird EXE installation packages: https://download.mozilla.org/?product=thunderbird-latest&os=win&lang=[LANGUAGE] https://download.mozilla.org/?product=thunderbird-latest&os=win64&lang=[LANGUAGE] https://download.mozilla.org/?product=thunderbird-beta-latest&os=win&lang=[LANGUAGE] https://download.mozilla.org/?product=thunderbird-beta-latest&os=win64&lang=[LANGUAGE] I found them here https://ftp.mozilla.org/pub/thunderbird/releases/latest/README.txt and here https://ftp.mozilla.org/pub/thunderbird/releases/latest-beta/README.txt Are there any permanent download links for the latest Thunderbird MSI installation packages? If not, I recommend creating: https://download.mozilla.org/?product=thunderbird-msi-latest&os=win&lang=[LANGUAGE] https://download.mozilla.org/?product=thunderbird-msi-latest&os=win64&lang=[LANGUAGE]