Does anyone have any tools to recommend for this? I have a few thousand scraped numbers, but would like to get more and start an SMS marketing campaign to get mobile app downloads. I see there are some credit based systems but I'm not sure if they are good. I thought about whatsapp but it seems even harder to get whatsapp numbers and then to not get banned, and email marketing is tough as well. I am hoping to explore all channels if I can get the right toolset.