It isn't even necessarily 'residential' IP's. It's IP's that don't have a valid reverse dns, preferably one that is also forward resolvable. Most ISP's won't let you set your reverse DNS on 'residential' connections, so it ends up being a blocker. Now you could set up a vpn tunnel to a vps provider that lets you set your reverse dns, and then things get a bit easier.

So prereqs - 1) Valid reverse DNS on your sending IP. Preferably with a hostname that is also forward resolvable. 2) SPF Records 3) DKIM