This feature is now publicly available. You can receive a message in your Gmail, Yahoo, or other regular email account when a CM is sent to you. You can also set the alert to go to your phone as a text message, using the email to text address (number@vtext.com, number@txt.att.net, or similar depending on your provider.)
To enable SMTP notification, look up this key in CM:
SMTP Notification Agent <notify@confidantmail.org> 1a7c151cd52dff3cbcc849b242eec0d5505f4090
Send a message to the agent with:
notify address@host.domain
as the only thing in the body. You will get an automatic reply within five
minutes. To turn off notification, send a message with:
cancel
as the only thing in the body.