diff --git a/nixos/email-accounts.nix b/nixos/email-accounts.nix
index 307d8d11..eaefd6cc 100644
--- a/nixos/email-accounts.nix
+++ b/nixos/email-accounts.nix
@@ -63,6 +63,10 @@ in {
 
     services.mbsync.enable = true;
 
+    home.file.".mailcap".text = ''
+      text/html;  ${pkgs.w3m}/bin/w3m -dump -o document_charset=%{charset} '%s'; nametemplate=%s.html; copiousoutput
+    '';
+
     systemd.user.services."proton-bridge" = {
       Unit.Description = "Bridge to ProtonMail";
       Install.WantedBy = [ "default.target" "mbsync.service" ];