Hi,
As bulk marketing is very important factor to increase the business ratio but sending bulk email for marketing purposes can also decrease your business just due to the email sending policy by yahoo,hotmail,gmail etc and lest inbox delivery ration etc.
I can guide you with step by step instruction that how you can setup your own server for sending emails in bulk with the guaranteed inbox delivery.
Its a long discussion, please come in chat session and i will provide you all the details. its not an issue.
Thank you.