NEWSLETTER SENDING

Hi We have 4 lists of emails costumers ( aprox 15,000 emails each list) total 60000 emails. Since last month i tried some services, but some need list activation or have sent the emails to the spam box of gmail, i want avoid activation because we already contacted these costumers since 2009. - I need someone who have a server, hosting, or service that allow me to send the mass email to my costumers directly to the inbox of the email providers, no spam. its very important i not want my newsletters considered as spam by gmail or yahoo. - Your service must have professional newsletter templates and unsubscribe option. - I want have a back office where i can send the newsletters. I will send monthly newsletters, when you bid tell how much do you want for newsletter for each list. And send me a sample or demo of your backoffice for test your service. Thanks very much Cristiano