Please use download.mozilla.org to retrieve the latest Thunderbird beta. For example, if you wish to download the US English installer for Windows (32bit) the url is https://download.mozilla.org/?product=thunderbird-beta-latest&os=win&lang=en-US This could be pasted into the location bar of a browser, or used with curl or wget, e.g. wget -O ThunderbirdSetup.exe "https://download.mozilla.org/?product=thunderbird-beta-latest&os=win&lang=en-US" For other operating systems replace 'os=win' with: OS X os=osx Linux x86_64 os=linux64 Linux i686 os=linux For other languages replace 'lang=en-US' with: Acholi lang=ach Afrikaans lang=af Albanian lang=sq Arabic lang=ar Aragonese lang=an Armenian lang=hy-AM Assamese lang=as Asturian lang=ast Azerbaijani lang=az Basque lang=eu Belarusian lang=be Bengali (Bangladesh) lang=bn-BD Bengali (India) lang=bn-IN Bosnian lang=bs Breton lang=br Bulgarian lang=bg Catalan lang=ca Chinese (Simplified) lang=zh-CN Chinese (Traditional) lang=zh-TW Croatian lang=hr Czech lang=cs Danish lang=da Dutch lang=nl English (British) lang=en-GB English (South African) lang=en-ZA Esperanto lang=eo Estonian lang=et Finnish lang=fi French lang=fr Frisian lang=fy-NL Fulah lang=ff Gaelic (Scotland) lang=gd Galician lang=gl German lang=de Greek lang=el Gujarati (India) lang=gu-IN Hebrew lang=he Hindi (India) lang=hi-IN Hungarian lang=hu Icelandic lang=is Indonesian lang=id Irish lang=ga-IE Italian lang=it Kannada lang=kn Kazakh lang=kk Khmer lang=km Korean lang=ko Latvian lang=lv Ligurian lang=lij Lithuanian lang=lt Lower Sorbian lang=dsb Macedonian lang=mk Maithili lang=mai Malay lang=ms Malayalam lang=ml Marathi lang=mr Norwegian (Bokmål) lang=nb-NO Norwegian (Nynorsk) lang=nn-NO Oriya lang=or Persian lang=fa Polish lang=pl Portuguese (Brazilian) lang=pt-BR Portuguese (Portugal) lang=pt-PT Punjabi (India) lang=pa-IN Romanian lang=ro Romansh lang=rm Russian lang=ru Serbian lang=sr Sinhala lang=si Slovak lang=sk Slovenian lang=sl Songhai lang=son Spanish (Argentina) lang=es-AR Spanish (Chile) lang=es-CL Spanish (Mexico) lang=es-MX Spanish (Spain) lang=es-ES Swedish lang=sv-SE Tamil lang=ta Telugu lang=te Thai lang=th Turkish lang=tr Ukrainian lang=uk Upper Sorbian lang=hsb Uzbek lang=uz Vietnamese lang=vi Welsh lang=cy Xhosa lang=xh Mozilla Release Engineering Email: release-engineering@lists.mozilla.org Web: https://groups.google.com/forum/#!forum/mozilla.release.engineering