>=dev-libs/glib-2.68:2
>=x11-libs/gtk+-3.24.23:3
>=net-libs/webkit-gtk-2.38:4.1=
>=dev-libs/gmime-3.2.4:3.0
>=dev-db/sqlite-3.24:3
x11-libs/cairo[glib]
app-text/enchant:2
>=dev-libs/folks-0.11:0=
>=app-crypt/gcr-3.10.1:0=
>=dev-libs/libgee-0.8.5:0.8=
net-libs/gnome-online-accounts
media-libs/gsound
>=app-text/gspell-1.7:=
>=dev-libs/icu-60:=
app-text/iso-codes
>=dev-libs/json-glib-1.0
>=gui-libs/libhandy-1.2.1:1=
>=dev-libs/libpeas-1.24.0:0
>=app-crypt/libsecret-0.11
net-libs/libsoup:3.0
dev-libs/snowball-stemmer:=
>=dev-libs/libxml2-2.7.8:2

ytnef?
      ( >=net-mail/ytnef-1.9.3 )

gnome-base/gsettings-desktop-schemas