Launchpad currently recommends translating thunderbird in Ubuntu Focal.

Template "libgpg-error" in Ubuntu Focal package "thunderbird"

Language Status Untranslated Need review Changed Last Edited By
Cherokee 100.00  100.0% untranslated 446 446 0 0
Dakota 100.00  100.0% untranslated 446 446 0 0
Hawaiian 100.00  100.0% untranslated 446 446 0 0
Inuktitut 100.00  100.0% untranslated 446 446 0 0
Lakota 100.00  100.0% untranslated 446 446 0 0
Ojibwe 100.00  100.0% untranslated 446 446 0 0
Spanish 012.11  87.8923766816% translated  12.1076233184% untranslated 54 54 0 0 2020-03-19 12:14:12 UTC 2020-03-19 Tails Developers
Tlingit 100.00  100.0% untranslated 446 446 0 0
Yiddish 100.00  100.0% untranslated 446 446 0 0
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Key to this table: “Unchanged” means Translated
and “untranslated” means just that, Untranslated

Other versions of thunderbird in Ubuntu