When sending a message to a Geni user, Geni responds that "The message has been sent". This means that Geni has transmitted the message to the users mailbox located at the Geni server. However, if the user has elected NOT TO RECEIVE Geni messages at their home mailbox, he does not know about the message. The sender waits, gets frustrated, and after several such incidents starts to loose interest.
In this case, would it not be better for Geni and all the users to receive a slightly different response. For example, it could simly say "The message is available for review". The sender knows not to expect a response anytime soon, and could explore alternate ways to communicate with the intended user. This would be a simle change, and help to mitigate at least one irritant for the users.