I have two lists that I want to mail to. One is 6000 leads for my business that I managed to pull from a large competitor after they ran a recent marketing campaign and left the sign up information sitting in a public directory (lol). The other list is for an app that I've made which is very popular amongst the target demographic and has a few thousand regular users without pretty much any marketing effort so far. It's a reference guide for a sport that's commonly taught in classes. What I'm planning to do is scrape google to come up with a list of results for "sport + city name" for a whole bunch of cities throughout the world so basically "Karate New York" "Karate Boulder" and so forth which brings up dojos in the areas, run the sites through an email extractor, and then send an email to all of them advertising my app. I'm expecting 100-400 thousands links or so from that depending on how many google pages/cities I do. I want to send 1 automated email total to each of these accounts, so I'm looking at traffic at a much lower rate than pretty much everyone doing mass mailing. I'm quiet happy to split my mailing up over a couple months so I'm only looking at 2000-10000 emails sent a day. Considering this as well as these emails are going to users in a niche which has already shown itself to like my product, and the message I plan to send will be very simple and will basically just be text plus links to the app on the play store/app store, what are the risks of having the server I plan to do the sending from blacklisted/the messages being marked as spam? Should I be considering setting up a temporary smtp server to do this instead of my normal business one? If that's the case is the domain address still fine? Like if I send all of my automated mail from prostorm at karateappcom and the mail server gets blacklisted, will I still be able to receive/send email as prostorm at karateappcom with no problems?