My GMail account is released!

My GMail account was captured and confined to sector 4 yesterday, but released today.

I am glad that I can log into my account.
But I feel a bit worried that it happens again.
I am a little discouraged from using GMail, since I would be in trouble if I can't retrieve my mails forever.
I hope Google make it clear what's wrong, so I can avoid doing it.
Or I can decide to stop using GMail.
I hope it never occur.