I had a problem getting the outbound email notifications working too, and found that it was the port # b/c this Samsung unit doesn't use the more common SSL, but rather TLS. For gmail, this is 587 instead of port 465. Once I changed that, the emails notifications worked fine.
However, I do have 2 issues w/ this unit:
1. the snapshot notifications that are sent triggered by motion can only be sent from one camera, even if the motion is detected by another camera - how lame is that?
2. Although I get "success" responses on the auto-port and port test for dynamic dns through Samsung's server, I can't access it successfully, and it doesn't allow me to select another ddns provider (appears to be unchangeable value).
I submitted support requests to Samsung for both issues. The quality of the cameras seems decent, but if I can't access the images remotely, I don't see the point in keeping the unit.