"We take your privacy seriously in every detail. For example you can keep Dino from informing the sender when you read a message, so they won't see a double-tick on their messages. Dino allows you to configure all of its privacy features per contact: You can keep your best friends up-to-date while not sharing anything with strangers."
Cybrespace is an instance of Mastodon, a social network based on open web protocols and free, open-source software. It is decentralized like e-mail.