{
  pkgs,
  lib,
  config,
  user,
  home-dir,
  ...
}:

{
  imports = [
    ./davmail.nix
    ./neomutt
    ./mailcap.nix
  ];
 
  options.custom.email = with lib; {
    enable = mkEnableOption "Enable email";
    davmail = mkEnableOption "Enable DavMail";
    mbsync = mkEnableOption "Enable Mbsync";
  };

  config = lib.mkIf config.custom.email.enable {
    services.davmail = {
      enable = config.custom.email.davmail;
      url = "https://outlook.office365.com/EWS/Exchange.asmx";
      config = {
        davmail.mode = "O365Manual";
        # davmail.mode = "O365Modern";
        davmail.keepDelay = 30;
        # log4j.logger.davmail = "DEBUG";
      };
    };

    programs = {
      neomutt = {
        macros = [
          {
            map = [
              "index"
              "pager"
            ];
            key = "<f2>";
            action = "<sync-mailbox><enter-command>source ~/.config/neomutt/uchicago<enter><change-folder>!<enter>";
          }
          {
            map = [
              "index"
              "pager"
            ];
            key = "<f3>";
            action = "<sync-mailbox><enter-command>source ~/.config/neomutt/personal<enter><change-folder>!<enter>";
          }
        ];
      };
      mbsync.enable = true;
      msmtp = {
        enable = true;
      };
    };

    services = {
      mbsync = {
        enable = config.custom.email.mbsync;
        frequency = "*:0/1";
      };
    };

    accounts.email = let
      cat = lib.getExe' pkgs.coreutils "cat";
    in rec {
      maildirBasePath = "${home-dir}/mail";
      accounts = lib.mkMerge ([
        {
          "personal" = {
            userName = "raydreww@gmail.com";
            address = "raydreww@gmail.com";
            realName = "Ray Andrew";
            primary = !config.custom.email.davmail;
            signature = {
              text = ''
                -- Ray Andrew
              '';
              showSignature = "append";
            };
            passwordCommand = "${cat} ${config.sops.secrets."personal".path}";
            gpg = {
              key = "1913ECC8FD7076BC8330E11607AA5254804C009F";
              signByDefault = true;
            };
            smtp = {
              host = "smtp.gmail.com";
            };
            imap = {
              host = "imap.gmail.com";
            };
            mbsync = {
              enable = true;
              create = "both";
              expunge = "both";
              patterns = [
                "*"
                "!\"[Airmail]/Done\""
                "!\"[Airmail]/Snooze\""
                "!\"[Airmail]/To Do\""
                "!\"[Airmail]/Send Later\""
                "!\"[Gmail]/All Mail\""
                "!\"[Gmail]/Important\""
                "!\"[Gmail]/Starred\""
                "!\"[Gmail]/Bin\""
              ];
            };
            msmtp = {
              enable = true;
            };
            neomutt = rec {
              enable = true;
              mailboxName = "p";
              extraConfig = ''
                set use_from = yes
                set pgp_verify_sig = yes
                set pgp_sign_as = 0x07AA5254804C009F
                set pgp_timeout = 3600
                named-mailboxes "${mailboxName}/inbox"     =Inbox
                named-mailboxes "${mailboxName}/drafts"    =Drafts
                named-mailboxes "${mailboxName}/sent"      =Sent
                named-mailboxes "${mailboxName}/important" =Important
                named-mailboxes "${mailboxName}/trash"     =Trash
                named-mailboxes "${mailboxName}/archive"   =Archive
              '';
            };
          };
        }
        (lib.mkIf config.custom.email.davmail {
          "uchicago" = {
            userName = "rayandrew@uchicago.edu";
            address = "rayandrew@uchicago.edu";
            realName = "Ray Andrew";
            primary = true;
            signature = {
              text = ''
                -- Ray Andrew
              '';
              showSignature = "append";
            };
            passwordCommand = "${cat} ${config.sops.secrets."uchicago".path}";
            gpg = {
              key = "0BADFAD0FB93296C84956F9CEEF04CFFE9DFE5FC";
              signByDefault = false;
            };
            smtp = {
              host = "127.0.0.1";
              port = 1025;
              tls = {
                enable = false;
                certificatesFile = null;
              };
            };
            imap = {
              host = "127.0.0.1";
              port = 1143;
              tls.enable = false;
            };
            mbsync = {
              enable = true;
              create = "both";
              expunge = "both";
              patterns = [
                "*"
                "!\"[Airmail]/Done\""
                "!\"[Airmail]/Snooze\""
                "!\"[Airmail]/To Do\""
                "!\"[Airmail]/Send Later\""
              ];
              extraConfig.account = {
                TLSType = "None";
                AuthMechs = "LOGIN";
                Timeout = 0;
              };
            };
            msmtp = {
              enable = true;
              extraConfig = {
                auth = "plain";
              };
            };
            neomutt = rec {
              enable = true;
              mailboxName = "u";
              extraConfig = ''
                set use_from = yes
                set pgp_sign_as = 0xEEF04CFFE9DFE5FC
                set pgp_verify_sig = yes
                set pgp_timeout = 3600
                named-mailboxes "${mailboxName}/inbox"     =Inbox
                named-mailboxes "${mailboxName}/drafts"    =Drafts
                named-mailboxes "${mailboxName}/sent"      =Sent
                named-mailboxes "${mailboxName}/important" =Important
                named-mailboxes "${mailboxName}/trash"     =Trash
                named-mailboxes "${mailboxName}/archive"   =Archive
                named-mailboxes "${mailboxName}/teaching"  =Teaching
              '';
            };
          };
        })
      ]);
    };

    sops = {
      age.keyFile = "${home-dir}/.config/sops/age/keys.txt";
      age.generateKey = true;
      defaultSopsFile = ./secrets.yaml;
      secrets = {
        "personal" = { };
        "uchicago" = { };
      };
    };
  };
}