Starmail

This article is incomplete, and it shall be expanded upon some time in the future. :) If you would like to see it expanded upon, leave a comment letting me know!

Starmail Logo by Mochi

Starmail is a multi-galaxy messaging platform based on Utopia. It has fourteen trillion monthly users, sending each other electronic mail with no charge. The platform has existed for a thousand years and is the second most highly rated platform on Utopia.

Can't give it five unfortunately. Doesn't allow me to send my cat through the mail.

— Cat lover