http://tutacomm6oqwlbbpd246mljjxpupuxxqj2jg5mfdyegeaetdauigslad.onion/blog/tutanota-oin-open-source
Launched in 2005, OIN
has strong industry support with backing from Google, IBM, NEC, Philips, Red Hat, Sony, SUSE, and Toyota - and now also Tutanota.
“We are very pleased to have an end-to-end encrypted mail service such Tutanota join our network, particularly given the
importance of privacy and freedom in today’s world,” says Keith Bergelt, CEO of OIN.