Install Mozilla Thunderbird 60 in Ubuntu or Linux Mint via PPA

Thunderbird 60 was released about two months ago, and the latest version is 60.2.1, but Ubuntu 18.04 / Linux Mint 19 and earlier continue to provide version 52. This is how to install the latest Thunderbird 60 in Ubuntu or Linux Mint.

Mozilla Thunderbird is a free open source email, news, RSS and chat client for Linux, Windows and macOS. The latest Thunderbird 60 stabilizer includes important changes, such as the new “Photon” appearance, new light and dark themes, attachment management, and calendar improvements. Related: Mozilla Thunderbird 60.0 comes with a new Photon look, important changes

Install Thunderbird in Ubuntu or Linux Mint using PPA repository

To install Thunderbird 60 in Ubuntu or Linux Mint, you can use Firefox ESR and Thunderbird stable version PPA. By adding PPA, you will also receive future Thunderbirds updates.
You can add PPA and install Thunderbird 60 by opening the terminal and using the following commands:

sudo add-apt-repository ppa:mozillateam/ppa
sudo apt-get update
sudo apt install thunderbird

PPA is available for Ubuntu 18.04, 16.04 and 14.04 / Linux Mint 19.x, 18.x and 17.x. Ubuntu 18.10 Cosmic Cuttlefish already has this version, so there is no need to add PPA.
Thunderbirds can also be Flathub, But still in version 52. The ThunderbirdFlathub package has been updated to version 60 at some point, but due to the following issues, it has been restored to version 52.9.1. insect Causes the application to crash at startup. However, this error seems to only affect the Flatpak package, because I did not accidentally find any problems with the Ubuntu PPA package.

How to downgrade Thunderbird to version 52

If you do n’t like the new Thunderbird 60 or some features do n’t work, you can downgrade to the previous version already installed on your system. For this, you need to install ppa-purge:

sudo apt install ppa-purge

Now, you can disable PPA and downgrade Thunderbird using the following command:

sudo ppa-purge ppa:mozillateam/ppa