nix-configs/nixos-modules/common/msmtp.nix

{ config, ... }:
{
  sops.secrets."gmail/password" = { };
  programs.msmtp = {
    enable = true;
    accounts.default = {
      auth = true;
      tls = true;
      host = "smtp.gmail.com";
      port = 587;
      from = "${config.networking.hostName}@notification.icanttype.org";
      user = "cdombroski";
      passwordeval = "cat ${config.sops.secrets."gmail/password".path}";
    };
    defaults.aliases = "/etc/aliases";
  };

  environment.etc = {
    "aliases" = {
      text = ''
        root: cdombroski@gmail.com
      '';
      mode = "0644";
    };
  };
}