Thank you for letting me know. I’ll update the message to say “firstname.lastname@example.org”. Otto was one component of a web hosting service I owned called Talkspot.com that had been operating for almost 15 years.
Talkspot hosted over 150,000 enough sites during its life, but never made money. I am shutting Talkspot down.
One of the best parts of Talkspot was Otto. I modified Otto to work with WordPress and the Otto app will be staying around.