{
  config,
  lib,
  ...
}: let
  cfg = config.mailsystem;
in {
  config = lib.mkIf cfg.enable {
    users.users."${cfg.vmailUserName}" = {
      uid = cfg.vmailUID;
      isSystemUser = true;
      group = cfg.vmailGroupName;
      home = cfg.mailDirectory;
      createHome = true;
      description = "Virtual Mail User";
    };

    users.groups."${cfg.vmailGroupName}" = {
      gid = cfg.vmailUID;
    };
  };
}