nix/modules/programs/mail/default.nix

{
  username,
  mail,
  domain,
  pkgs,
  ...
}: {
  programs.mbsync = {
    enable = true;
  };

  accounts.email = {
    maildirBasePath = ".local/share/mail";

    accounts = {
      "${mail.a}@${domain}" = {
        address = "${mail.a}@${domain}";
        userName = "${mail.a}";
        realName = "${username}";
        passwordCommand = "cat /run/secrets/contact";
        imap.host = "mail.${domain}";
        smtp.host = "mail.${domain}";
        imap.port = 993;
        mbsync.enable = true;
        mbsync.create = "both";
        neomutt = {
          enable = true;
          extraMailboxes = [
            {mailbox = "Sent";}
            {mailbox = "Junk";}
            {mailbox = "Trash";}
            {mailbox = "Drafts";}
          ];
        };
      };
      "${mail.b}@${domain}" = {
        primary = true;
        address = "${mail.b}@${domain}";
        userName = "${mail.b}";
        realName = "${username}";
        passwordCommand = "cat /run/secrets/mail";
        imap.host = "mail.${domain}";
        smtp.host = "mail.${domain}";
        imap.port = 993;
        mbsync.enable = true;
        mbsync.create = "both";
        neomutt = {
          enable = true;
          extraMailboxes = [
            {mailbox = "Sent";}
            {mailbox = "Junk";}
            {mailbox = "Trash";}
            {mailbox = "Drafts";}
          ];
        };
      };
      "${mail.c}@${domain}" = {
        address = "${mail.c}@${domain}";
        userName = "${mail.c}";
        realName = "${username}";
        passwordCommand = "cat /run/secrets/spyware";
        imap.host = "mail.${domain}";
        smtp.host = "mail.${domain}";
        imap.port = 993;
        mbsync.enable = true;
        mbsync.create = "both";
        neomutt = {
          enable = true;
          extraMailboxes = [
            {mailbox = "Sent";}
            {mailbox = "Junk";}
            {mailbox = "Trash";}
            {mailbox = "Drafts";}
          ];
        };
      };
    };
  };
  programs.neomutt = {
    enable = true;
    editor = "hx";
    extraConfig = ''      bind index i noop
      bind pager i noop
      macro index,pager i1 '<sync-mailbox><enter-command>source /home/${username}/.config/neomutt/${mail.a}@${domain}<enter><change-folder>!<enter>;<check-stats>' "switch to ${mail.a}@${domain}"
      macro index,pager i2 '<sync-mailbox><enter-command>source /home/${username}/.config/neomutt/${mail.b}@${domain}<enter><change-folder>!<enter>;<check-stats>' "switch to ${mail.b}@${domain}"
      macro index,pager i3 '<sync-mailbox><enter-command>source /home/${username}/.config/neomutt/${mail.c}@${domain}<enter><change-folder>!<enter>;<check-stats>' "switch to ${mail.c}@${domain}"

      # Sidebar mappings
      set sidebar_visible = yes
      set sidebar_width = 20
      set sidebar_short_path = yes
      set sidebar_next_new_wrap = yes
      set mail_check_stats
      set sidebar_format = '%D%?F? [%F]?%* %?N?%N/? %?S?%S?'
      bind index,pager \Ck sidebar-prev
      bind index,pager \Cj sidebar-next
      bind index,pager \Co sidebar-open
      bind index,pager \Cp sidebar-prev-new
      bind index,pager \Cn sidebar-next-new
      bind index,pager B sidebar-toggle-visible


      color normal white black
      color error brightwhite default
      color status white brightblack
      color sidebar_highlight blue default

      # Default index colors
      color index white black '.*'
      color index_author blue default '.*'
      color index_number blue default
      color index_subject white default '.*'

      # New mail
      color index brightwhite brightblack "~N"
      color index_author brightblue brightblack "~N"
      color index_subject brightwhite brightblack "~N"

      # Tagged mail
      color index brightwhite blue "~T"
      color index_author brightblue blue "~T"
      color index_subject brightwhite blue "~T"

      # Other colors and aesthetic settings
      mono bold bold
      mono underline underline
      mono indicator reverse
      mono error bold
      color indicator brightblack white
      color sidebar_divider brightblack black
      color sidebar_flagged blue black
      color sidebar_new white black
      color normal white default
      color message cyan default
      color markers brightwhite white
      color attachment white default
      color search cyan default
      color hdrdefault brightgreen default

      # Quoted text
      color quoted white default
      color quoted1 blue default
      color quoted2 cyan default
      color quoted3 brightwhite default
      color quoted4 brightblue default
      color quoted5 brightcyan default

      # Signature
      color signature brightgreen default

      # Bold and Underline
      color bold black default
      color underline black default

      bind index,pager g noop
      bind index \Cf noop
      bind index,pager M noop
      bind index,pager C noop

      # General rebindings
      bind index gg first-entry
      bind index j next-entry
      bind index k previous-entry
      bind attach <return> view-mailcap
      bind attach l view-mailcap
      bind index G last-entry
      bind index gg first-entry
      bind pager,attach h exit
      bind pager j next-line
      bind pager k previous-line
      bind pager l view-attachments
      bind index D delete-message
      bind index U undelete-message
      bind index L limit
      bind index h noop
      bind index l display-message
      bind index,query <space> tag-entry
      #bind browser h goto-parent
      macro browser h '<change-dir><kill-line>..<enter>' "Go to parent folder"
      bind index,pager H view-raw-message
      bind browser l select-entry
      bind pager,browser gg top-page
      bind pager,browser G bottom-page
      bind index,pager,browser d half-down
      bind index,pager,browser u half-up
      bind index,pager S sync-mailbox
      bind index,pager R group-reply

      macro index,pager gi "<change-folder>=Inbox<enter>" "go to inbox"
      macro index,pager Mi ";<save-message>=Inbox<enter>" "move mail to inbox"
      macro index,pager Ci ";<copy-message>=Inbox<enter>" "copy mail to inbox"
      macro index,pager gd "<change-folder>=Drafts<enter>" "go to drafts"
      macro index,pager Md ";<save-message>=Drafts<enter>" "move mail to drafts"
      macro index,pager Cd ";<copy-message>=Drafts<enter>" "copy mail to drafts"
      macro index,pager gj "<change-folder>=Junk<enter>" "go to junk"
      macro index,pager Mj ";<save-message>=Junk<enter>" "move mail to junk"
      macro index,pager Cj ";<copy-message>=Junk<enter>" "copy mail to junk"
      macro index,pager gt "<change-folder>=Trash<enter>" "go to trash"
      macro index,pager Mt ";<save-message>=Trash<enter>" "move mail to trash"
      macro index,pager Ct ";<copy-message>=Trash<enter>" "copy mail to trash"
      macro index,pager gs "<change-folder>=Sent<enter>" "go to sent"
      macro index,pager Ms ";<save-message>=Sent<enter>" "move mail to sent"
      macro index,pager Cs ";<copy-message>=Sent<enter>" "copy mail to sent"
      macro index,pager ga "<change-folder>=Archive<enter>" "go to archive"
      macro index,pager Ma ";<save-message>=Archive<enter>" "move mail to archive"
      macro index,pager Ca ";<copy-message>=Archive<enter>" "copy mail to archive"'';
  };
  home.file.".mailcap".text = ''
    text/html; ${pkgs.lynx}/bin/lynx -dump %s; copiousoutput; nametemplate=%s.html
  '';
}