Greetings, I am the maintainer of {mozilla,thunderbird,firefox}-extension-gnome-keyring and I would like to argue that the package is still usable and relevant. The Add-On still works fine in Thunderbird and some forks of Firefox, like Pale Moon <https://aur.archlinux.org/packages/palemoon/>. Though the Git variant <https://aur.archlinux.org/pkgbase/mozilla-extension-gnome-keyring-git/> could be used to build it from source instead, only the XPI source is signed by Mozilla and thus usable when signature checking is enforced, which is the default since a few years. While the current source URL points to nowhere, a download link still exists on the Thunderbird page. <https://addons.thunderbird.net/de/thunderbird/addon/mozilla-gnome-keyring/> I will have to evaluate whether it can also be used for Firefox derivatives. Regards, XZS.