According to the linked wiki page [0]: > To process OpenPGP messages, GnuPG stores secret keys, public keys of correspondents, and trust information for public

According to the linked wiki page [0]: > To process OpenPGP messages, GnuPG stores secret keys, public keys of correspondents, and trust information for public keys in its own file format. Thunderbird 78 will not reuse the GnuPG file format, but will rather implement its own storage for keys and trust. First reaction: Yay! We'll get to manage everything twice! Second reaction: I am hopeful they'll support private keys stored on smartcards (i.e., Yubikeys, "real" smartcards, and OpenPGP cards) although, if the support in Firefox is any indicator, I wouldn't bet on it actually being "usable". [0]: https://wiki.mozilla.org/Thunderbird:OpenPGP:2020 https://wiki.mozilla.org/Thunderbird:OpenPGP:2020