The next release 38.0 of the Thunderbird Email client is in beta testing and needs help testing on Linux.
Thunderbird 38 beta 2 is available
For 64-bit versions you can go to Index of /pub/mozilla.org/thunderbird/releases/latest-beta/linux-x86_64
Thunderbird 38 - more eyes
Beta 3 should be out soon, so do a Help | About | Update.
Thunderbird 38 beta 2 is available
For 64-bit versions you can go to Index of /pub/mozilla.org/thunderbird/releases/latest-beta/linux-x86_64
Thunderbird 38 - more eyes
Beta 3 should be out soon, so do a Help | About | Update.