Need support in bulk email delivery

We are an email marketing company based in the U.S. We are seeking a skilled person who specializes in bulk email delivery. Our mailers mail over 5 million emails daily. They are able to achieve 80% delivery rate. However, they need assistance and guidance in assuring that the emails go directly to the inboxes and avoid being junked. We have our own servers and our own platform from which we mail. WE ARE NOT LOOKING FOR COMPANIES WHO WANT TO OFFER US THEIR SERVERS, AND THEIR PLATFORMS. Basically, we are looking for an individual who is capable of avoiding being hit by spam traps and thus being blacklisted by spam organizations, as our material is NOT SPAM. Our email campaigns are solely for well known, legal companies (i.e. no pharmaceutical, adult or entertainment ads). We would like you to guide our mailers to increase their proficiency and teach them new techniques to increase delivery to inboxes. We are looking for an expert that is able to “crack the code’. Those who are able to avoid being blacklisted, listed as spam and/or junked are urged to respond! Please submit bids as this could turn into a long term relationship with the right person.