Mass mailing

Is anyone here familiar with sending mass emails for advertising?
I need some quick guide for using it as it seems a very powerful method to get traffic.
Also if you had any experience using it, can you pls tell me how much will it cost overall ?

All I know is mass sms. I also want to know about mass emails

If you don't want to mess with difficult configs and setup just use a tool that allows you to send from many Gmail accounts and lroxies