Portable Daily 32-64 bit MultiVersion Online (0.5 MB) 06/10/17
In first screen enter: 65.0a1
Portable Thunderbird MultiVersion 32-64 bit Multilingual Online (0.5 MB) 07/08/18
Select language and enter Version Number: 64.0b2 or 60.3.2 or 17.0.11esr (only 32 bit for ESR)
Multilingual Online will download setup in selected language (Afrikaans, Belarusian, Bulgarian, Catalan, Czech, German, Greek, English, SpanishInternational, Spanish, Basque, Finnish, French, Irish, Hebrew, Hungarian, Italian, Japanese, Korean, Lithuanian, Norwegian, Dutch, NorwegianNynorsk, Polish, PortugueseBR, Portuguese, Russian, Slovak, Swedish, Ukrainian, SimpChinese) and extract files.
Multi-Users: change Profile by editing ThunderbirdPortable.ini with User=NameOfNewUser
Associated to if FirefoxPortable and ThunderbirdPortable folders are in the same folder. A link clicked in a mail will be opened in Firefox Portable (don’t work on Windows 8 and above).
Settings of installed Thunderbird should be preserved.