{
  pkgs,
  config,
  lib,
  ...
}: {
  targets.darwin.defaults = {
    # Remember the fallen
    "com.apple.mail" = {
      UserHeaders = "{ \"X-Clacks-Overhead\" = \"GNU Terry Pratchett\"; }";
    };
  };

  programs.himalaya = {
    enable = true;
  };
  # programs.mbsync.enable = true;
  programs.msmtp.enable = true;
  # programs.notmuch.enable = true;

  programs.aerc = {
    enable = false;
    extraConfig = {
      general.unsafe-accounts-conf = true;

      filters = {
        "text/plain" = "colorize";
      };

      ui = {
        threading-enabled = true;
      };
    };
  };

  accounts.email.accounts."hauleth" = {
    realName = "Łukasz Niemier";
    userName = "hauleth";
    address = "~@hauleth.dev";
    # aliases = [
    #   "#@hauleth.dev"
    # ];
    primary = true;

    passwordCommand = "op item get i6gyiq3aro4lp2ys5xygfb7uwu --field password";

    # mbsync.enable = true;
    # notmuch.enable = true;
    aerc = {
      enable = true;
      extraAccounts = {
        default = "INBOX";
        copy-to = "INBOX";
        folders-sort = "INBOX,Draft";
        signature-file = toString (pkgs.writeTextFile {
          name = "hauleth-signature";
          text = config.accounts.email.accounts.hauleth.signature.text;
        });
      };
    };
    himalaya = {
      enable = true;
      settings = {
        folder.aliases = {
          inbox = "INBOX";
          sent = "Sent Items";
          trash = "Deleted Items";
        };
      };
    };
    msmtp.enable = true;

    signature = {
      showSignature = "append";

      text = ''
        Hauleth
        ~@hauleth.dev
      '';
    };

    # TODO: Migrate to JMAP
    imap = {
      host = "mail.hauleth.dev";
      port = 993;
    };

    jmap = {
      host = "mail.hauleth.dev";
    };

    smtp = {
      host = "mail.hauleth.dev";
      port = 465;
      # tls = true;
    };
  };
}