I wasn't aware of this PIN either. Even if you do change your MX record, and move your email elsewhere, you still get locked out of access to your old email, which can be important.
I have a (free) google apps account for my domain, but I configured it so it actually still goes through my own MX server. It took a bit of trickery, because google wants you to use theirs, but I managed to get around it. It works well for a couple of years now. My email always goes first through my own MX, and then to google.
I would still be pretty upset if they blocked me though. But I guess I can't expect much from a free service.
I have a (free) google apps account for my domain, but I configured it so it actually still goes through my own MX server. It took a bit of trickery, because google wants you to use theirs, but I managed to get around it. It works well for a couple of years now. My email always goes first through my own MX, and then to google.
I would still be pretty upset if they blocked me though. But I guess I can't expect much from a free service.