{
  pkgs,
  config,
  ...
}: let
  default_mailbox = {
    MailboxName = "<missing>";
    MatrixRoomId = "<missing>";
    MatrixHomeserverUrl = "https://matrix.maralorn.de";
    MatrixUserId = "@marabot:matrix.maralorn.de";
    MatrixAccessToken = pkgs.privateValue "" "matrix/marabot-token";
    IgnoreSubject = false;
    IgnoreBody = false;
    SkipMarkdown = false;
  };
  email2matrix-config = pkgs.writeText "email2matrix-config.json"
  (builtins.toJSON {
    Smtp = {
      ListenInterface = "[::1]:2525";
      Hostname = "email2matrix.maralorn.de";
      Workers = 10;
    };
    Matrix = {
      Mappings = [
        (default_mailbox
        // {
          MailboxName = "notify";
          MatrixRoomId = "!kTKVQjRwxjaoMQmcve:maralorn.de";
        })
        (default_mailbox
        // {
          MailboxName = "subjects";
          MatrixRoomId = "!kTKVQjRwxjaoMQmcve:maralorn.de";
          IgnoreBody = true;
        })
        (default_mailbox
        // {
          MailboxName = "weather";
          MatrixRoomId = "!ELeFcSrHXgMqOmwnxg:maralorn.de";
        })
      ];
    };
    Misc = {Debug = true;};
  });
in {
  systemd.services.email2matrix = {
    script = "${pkgs.email2matrix}/bin/devture-email2matrix --config ${email2matrix-config}";
    wantedBy = ["multi-user.target"];
  };
}