Hi
So far we have executed several large scale email campaigns, in excess of 30 M emails.
We have our own dedicated email system setup on dedicated servers with licensed copies of Interspire Email Marketer. We strictly adhere to the CAN SPAM act and follow all the standard email authentication protocols such as SPF, DKIM, rDNS and all our emails contain the precedence: bulk header (in accordance with Google's bulk mailing guidelines)
Upon completion of the campaign, you would be provided with full reports of the campaign, such as open rates, click stats, unsubscribes, bounces etc.
Let me know more details on your requirement so that I could assist you better
Thanks