Please unlock email "Daily Mail Size Quota Exceeds Limit"

My email is info@saigonhanoiholiday.com is blocked right now.

The reason is

User : info@saigonhanoiholiday.com
Details :Mail Outgoing blocked. Reason :Daily Mail Size Quota Exceeds Limit [Total Mail Size=512,000]

I'm very busy at my bussiness n have to send many email each day. Please unblock my acc.

Thanks you very much