I run a few side projects on different domains and managing email for all of them was always a pain. There are free options out there. Cloudflare Email Routing, for example, lets you forward incoming mail to your personal Gmail. But that only solves half the problem. You can receive, sure, but you can't reply from your custom domain. You're still sending from your personal address. And if you want to actually send from your domain, you need to set up a completely separate service like Resend o...