I use Fastmail, and have it pull in my gmail account via IMAP. I actually don’t have too much sent to my gmail these days, as I was already using the custom dom

I use Fastmail, and have it pull in my gmail account via IMAP. I actually don’t have too much sent to my gmail these days, as I was already using the custom domain with gmail for many years before I switched providers, but what does get sent to it comes through just fine.