gentoo-overlay/mail-client/thunderbird-bin/files/gentoo-default-prefs.js

pref("general.smoothScroll",               true);
pref("general.autoScroll",                 false);
pref("general.useragent.locale",           "chrome://global/locale/intl.properties");
pref("mail.shell.checkDefaultClient",      false);
pref("intl.locale.requested",              "");
/* Disable DoH by default */
pref("network.trr.mode",                   5);