Download List

Project Description

Tenfourbird is unofficial build of Mozilla Thunderbird for PowerPC based Mac OS X.

Tenfourbird uses changesets of TenFourFox.

Latest version is 38.9.0.

System Requirements

System requirement is not defined

Released at 2016-03-20 23:00
Tenfourbird-38 38.7.0 (8 files Hide)

Release Notes

If you find bug, please report to Forums or Ticket system.


You can check integrity of files by RIPEMD160 or SHA512 hashes. It signed by OpenPGP key of t_mrc-ct[at] The public key could get from here or OpenPGP Keysever.


All langpacks have not been updated since v38.4.0.

Known Issues
  • Auto Updater does not fully supported. (Update Checker is supported. But you need to download and install new version manually.)
  • Tenfourbird doesn't contains Enigmail add-on since v17.0. It provide separately.
  • Enigmail for Tenfourbird 10.0.* or before does not update automatically. You need to download and install Enigmail for Tenfourbird manually.
  • Sudden message deletion issue is reported. I think it may related Mbox compaction. I recommend mail backup before folder compaction.
  • Chat communication disconnects regularly. (forum)
  • There are also open tickets reported.
What is Tenfourbird based on?
See also


  • Update codebase to Thunderbird 38.7.0 and TenFourFox 38.7.0
  • Update codebase to Thunderbird 38.6.0 and TenFourFox 38.6.1
  • Update codebase to Thunderbird 38.5.1 and TenFourFox 38.5.0
  • Fix Cert error on update dialog (ticket:35740)
  • Update codebase to Thunderbird 38.4.0 and TenFourFox 38.4.0
  • Update codebase to Thunderbird 38.3.0 and TenFourFox 38.3.0
38.2.0 beta2
  • Update codebase to Thunderbird 38.2.0 and TenFourFox 38.2.1
38.1.0 beta1
  • Disable TabsInTitlebar because of traffic light buttons disappear (See also: Tffx Issue 247, Tffx Issue 282)
  • Update codebase to Thunderbird 38.1.0 and TenFourFox 38.1.1b2
38.0 beta
  • Release skipped.
See also