Mail

Looking for suggestions on strategy for personal mail. I'm currently piggybacked on a client with a hosted VM that's been working well for years, but he's going to managed hosting and I'm loosing the server. I don't want to rent a VM for three people's personal mail. I can run a mail server on my home server, but RDNS and Residential blacklists would make it hard to send mail. My ISP (Google) doesn't offer relays.