diff --git a/nixos/modules/services/mail/mailcatcher.nix b/nixos/modules/services/mail/mailcatcher.nix
index f5b4508b335c..84f06ed199dc 100644
--- a/nixos/modules/services/mail/mailcatcher.nix
+++ b/nixos/modules/services/mail/mailcatcher.nix
@@ -25,6 +25,13 @@ in
         description = "The port address of the http server.";
       };
 
+      http.path = mkOption {
+        type = with types; nullOr str;
+        default = null;
+        description = "Prefix to all HTTP paths.";
+        example = "/mailcatcher";
+      };
+
       smtp.ip = mkOption {
         type = types.str;
         default = "127.0.0.1";
@@ -53,7 +60,7 @@ in
       serviceConfig = {
         DynamicUser = true;
         Restart = "always";
-        ExecStart = "${pkgs.mailcatcher}/bin/mailcatcher --foreground --no-quit --http-ip ${cfg.http.ip} --http-port ${toString cfg.http.port} --smtp-ip ${cfg.smtp.ip} --smtp-port ${toString cfg.smtp.port}";
+        ExecStart = "${pkgs.mailcatcher}/bin/mailcatcher --foreground --no-quit --http-ip ${cfg.http.ip} --http-port ${toString cfg.http.port} --smtp-ip ${cfg.smtp.ip} --smtp-port ${toString cfg.smtp.port}" + optionalString (cfg.http.path != null) " --http-path ${cfg.http.path}";
         AmbientCapabilities = optionalString (cfg.http.port < 1024 || cfg.smtp.port < 1024) "cap_net_bind_service";
       };
     };