Tenfourbird is unofficial build of Mozilla Thunderbird for PowerPC based Mac OS X.
Tenfourbird uses changesets of TenFourFox.
Latest version is 38.9.0.
THIS IS A BETA RELEASE.
It is strongly recommended that BACKING UP YOUR PROFILE DIRECTORY before installing this release. ( /Users/[user_dir]/Library/Thunderbird )
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]users.sourceforge.jp. The public key could get from here or OpenPGP Keysever.
All langpacks have not been updated since v38.1.0.