1) E-mail too small? This is normal for that firmware, it's so you can see what's going on not e-mail the police with evidence
2) E-mail only on motion detection and not on smart events (just as line-crossing). Again this is normal.
I have set motion detection, line crossing and Intrusion Detection,
I understand that only with motion detection I will get image,
But also with motion detection emails I don't get image attach.
In my experience, you need to install a HDD so the cam has a drive to write files to.
Once it has a HDD connected it can also upload pictures to an FTP server or execute actions similar to that.