Is bulk mailing allowed

"Leads" sounds an awful lot like folks that have not signed up to receive your email.

This in turn sounds an awful lot like spam.

Please do not spam. It already took me cycling through 10 or so IP addresses before I found one that was not blacklisted by most major RBL's for my own personal use.

If you fired off 20,000 email's your IP will get blocked pretty quickly and sadly any of your IP neighbours will get listed as well. :(

MailChimp does not allow uploading purchased databases in their software.

Clickback has provided a solution for those looking to utilize a cold, outbound email campaign.