Completely pointless technology

My manager sent me a meeting invitation via outlook yesterday. Accidentally, autofill managed to fill in my SIP address rather than my email address. I wasn't logged into my SIP account when this happened. When I get back to my desk, I notice that my voice mail indication is on. When I check it, it says there's been a fax sent to voice mail from my manager's phone number and the fax has no attachments. 

Fax with no attachments? Fax to voice mail? An outlook appointment converted to fax? File it under technology that's completely pointless.