I also am a happy paying Fastmail customer w/ a custom domain, but perhaps you could look into Cloudflare Email Routing[1] that was announced just a few days ag

I also am a happy paying Fastmail customer w/ a custom domain, but perhaps you could look into Cloudflare Email Routing[1] that was announced just a few days ago? It's in private beta. [1] https://news.ycombinator.com/item?id=28670125 https://news.ycombinator.com/item?id=28670125