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 openSUSE Slowroll run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:manfred-h:mozilla:esr/openSUSE_Slowroll/home:manfred-h:mozilla:esr.repo
zypper refresh
zypper install MozillaThunderbird
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:manfred-h:mozilla:esr/openSUSE_Factory/home:manfred-h:mozilla:esr.repo
zypper refresh
zypper install MozillaThunderbird
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:manfred-h:mozilla:esr/16.0/home:manfred-h:mozilla:esr.repo
zypper refresh
zypper install MozillaThunderbird
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:manfred-h:mozilla:esr/15.6/home:manfred-h:mozilla:esr.repo
zypper refresh
zypper install MozillaThunderbird