estamina

Hello, as the title says, I have more than 9000 email of master degree students in a scientific university, I have never considering email marketing as a way to promote my offers and websites,and I have no idea how it's work and i have got this list just from one of my friends and he also doesn't have any ideas how this email marketing works,he work in this university as a secretaire and probably he got this list illegaly, so please don't insult me in the replies and please don't make fun of me, just help me with my questions, how i can send an email to all contact in this list at once? do I need a software or just from google? again, I'm a newbie in the email marketing and this is the first time ever I consider using it.