They have German and Finnish data centers, as well as American. Pricing is pretty competitive, and unlike anything super autoscalable in AWS, it’s predictable.
They offer an email service that comes with their basic webhosting service, which is a bundle that costs less for 100 inboxes than Google Suite or Proton for just one user, if all you need is email.
I believe they do. People do run mailservers on Hetzner, they even have a Mailcow setup guide.
They no longer provide FreeBSD images but there’s a workaround here that might work for a VPS as I believe their KVM console is for dedicated servers only but I can’t immediately verify that.