{
  config,
  pkgs,
  ...
}: {
  imports = [
    (builtins.fetchTarball {
      url = "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/nixos-25.05/nixos-mailserver-nixos-25.05.tar.gz";
      # release="nixos-25.05"; nix-prefetch-url "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/${release}/nixos-mailserver-${release}.tar.gz" --unpack
      sha256 = "0000000000000000000000000000000000000000000000000000";
    })
  ];

  # simple-nixos-mailserver
  # DOCS: https://nixos-mailserver.readthedocs.io/en/latest
  mailserver = {
    enable = true;
    stateVersion = 3;
    # Manually open the firewall instead
    openFirewall = false;
    virusScanning = false; # expensive memory usage

    fqdn = "mail.imbored.dev";
    domains = ["imbored.dev"];

    # A list of all login accounts. To create the password hashes, use
    # nix-shell -p mkpasswd --run 'mkpasswd -sm bcrypt'
    loginAccounts = {
      "me@imbored.dev" = {
        hashedPasswordFile = "/a/file/containing/a/hashed/password";
        aliases = ["emile@imbored.dev"];
      };
    };

    # Use Let's Encrypt certificates. Note that this needs to set up a stripped
    # down nginx and opens port 80.
    certificateScheme = "acme-nginx";
  };
}