MozillaThunderbird from home:manfred-h:mozilla:esr project

For openSUSE Tumbleweed run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:manfred-h:mozilla:esr/openSUSE_Tumbleweed/home:manfred-h:mozilla:esr.repo
zypper refresh
zypper install MozillaThunderbird

For 15.5 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:manfred-h:mozilla:esr/15.5/home:manfred-h:mozilla:esr.repo
zypper refresh
zypper install MozillaThunderbird

For 15.4 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:manfred-h:mozilla:esr/15.4/home:manfred-h:mozilla:esr.repo
zypper refresh
zypper install MozillaThunderbird

For openSUSE Leap 15.3 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:manfred-h:mozilla:esr/openSUSE_Leap_15.3/home:manfred-h:mozilla:esr.repo
zypper refresh
zypper install MozillaThunderbird