Set up bulk-friendly SMTP server

Hi, I am trying to send mass e-mail, but all the SMTP servers I've used (mail jet, swipe mail, mail gun, send grid, constant contact, send in blue, etc.) don't work and reject you quickly, only linode would take me for months at a time, but they are hard to set up. I have Group Mail Pro, an old upwork worker set up an smtp server on my windows box and we used linode as a second level up-streaming provider. Another consideration I thought of is hiring someone to set up a WAMP box to send e-mail, where I can use Group Mail Pro to send messages, but need to give PC anywhere-like access to my PC. I am not sure if a dual boot is the best option, I have good RAM space on my $400 Lenova. Thank you.