I sent a test email to myself and it went to SPAM. Why did this happen?

Emails can go to the SPAM folder when you send a message to the email address you used to sign up for Hilo.  The reason for this is that the email provider (Gmail, yahoo, etc.) knows that the email did not come from their servers (because the email is sent from you, to you, the provider can verify that the email came from a different server).  That is why the message may get flagged.

However, this is not an indicator that other emails sent from Hilo will be flagged as SPAM.