cold emailing

I want to sent at the beginning around 500 emails/day with some offers. Im not sure where i should start? I checked sites like: atompark, group-mail, authsmtp, mailchimp but I think they are very strict with the anti-spam rules. Will they ban me if i will send mails with offers? I could invest...

I just want to share my opinion on the posts I've been seeing regarding offline marketing. I came here looking for a magic trick in order to get clients but the more I read, the more disappointed/discouraged I became. I can't keep up. I have little to no experience in this so excuse me if I'm...