Thunderbird Nightly gets a new version every day and as a consequence, the release notes for the Nightly channel are updated continuously to reflect features that have reached sufficient maturity to benefit from community feedback and bug reports. Features listed here may or may not make a final release of Thunderbird.
apt-get -y install devscripts dpkg-dev
git clone https://github.com/Vitexus/ThunderbirdDailyDeb.git
debuild -i -us -uc -bDownload from http://repo.vitexsoftware.cz/pool/buster/main/n/nightly/ or Build package. Then install:
gdebi daily_80.0a1_all.debOr you can use repo:
sudo apt install lsb-release wget apt-transport-https bzip2
sudo wget -O /usr/share/keyrings/vitexsoftware.gpg https://repo.vitexsoftware.cz/keyring.gpg
echo "deb [signed-by=/usr/share/keyrings/vitexsoftware.gpg] https://repo.vitexsoftware.cz $(lsb_release -sc) main" | sudo tee /etc/apt/sources.list.d/vitexsoftware.list
sudo apt update
sudo apt install daily
See also: https://github.com/Vitexus/FirefoxNightlyDeb https://github.com/VitexSoftware/FirefoxDevelEditionDeb