Portable Thunderbird is the popular Mozilla Thunderbird email client packaged so you can carry around with you on any portable device, USB thumb drive, iPod, portable hard drive, memory card, other portable device (also on your internal hard disk) as long as it has 33 MB of free space and use on any Mac computer, taking your email, address book and account settings with you.

What's New

  • Config setting added to disable OpenPGP "encryption is possible" reminder: mail.openpgp.remind_encryption_possible

Changes

  • Thunderbird on macOS will now prompt for Primary Password on startup if set
  • Thunderbird will no longer offer to import OpenPGP keys that are incomplete
  • Selecting or unselecting a dictionary in the Spelling compose toolbar button will no longer immediately close the menu; Making dictionary changes via the editor context menu will continue to close the context menu
  • Contact address lines are now adjusted to appear in the expected order
  • Custom1-4 fields restored to Address Book UI; existing data is preserved from pre-102 profiles