using your settings:
200 emails, every 10
would exceed the 500 email limit in 25 minutes
200 - first 10 minutes
200 - 20 minutes
100 - 25 minutes
500 emails sent
200 emails, every 10 minutes will send 1,200 emails in an hour
200 * 6 = 1,200
You should set the emails to send 82 every 10 minutes, this will send 492 email in an hour.
82 * 6 = 492