I have 18,000 100% opt-in contacts on my list with a reputable ESP. I was thinking that maybe I could double my revenue by copying my contacts to a separate ESP and emailing them from there in addition to my original sends. Same topic but new, different content. The second set-up would be under a different company name so recipients would not know both emails are coming from me.
I gather that it's legal as long as I have a legit mailing address in the email and an unsubscribe button, as well as a note that the email is an ad.
Does this seem feasible? Or am I just asking for trouble?