diff --git a/README.md b/README.md
index 17abc5c..fb4e9a3 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,28 @@ Add this to your `configuration.nix` file
 
 ```nix
 environment.etc."eintopf-radar-sync-secrets.yml".text = ''
-EINTOPF_AUTHORIZATION_TOKEN=foobar23
+accounts:
+  - name: Sales
+    imap_server: mail.example.com
+    imap_port: 993
+    username: sales@example.com
+    password: secret
+
+  - name: Support
+    imap_server: mail.example.com
+    imap_port: 993
+    username: support@example.com
+    password: secret
+
+mail:
+  smtp_server: mail.example.com
+  smtp_port: 587
+  smtp_username: monitoring@example.com
+  smtp_password: secret
+  from_address: monitoring@example.com
+  recipients:
+    - admin1@example.com
+    - admin2@example.com
 '';
 
 services.mail-quota-warning = {
diff --git a/mail-quota-warning.py b/mail-quota-warning.py
index 5b2eea3..08a4d2b 100644
--- a/mail-quota-warning.py
+++ b/mail-quota-warning.py
@@ -263,8 +263,8 @@ def main():
     args = parse_args()
     config = load_config(args.config)
     state = load_state()
-    interval_days = config.get("check_interval_days", 7)
-    threshold = config.get("quota_warning_threshold_percent", 80)
+    interval_days = get_config_value(config, "CHECK_INTERVAL_DAYS", "check_interval_days", 7, int)
+    threshold = get_config_value(config, "QUOTA_WARNING_THRESHOLD_PERCENT", "quota_warning_threshold_percent", 80, int)
     
     # For thread-safe state updates
     state_lock = threading.Lock()
diff --git a/module.nix b/module.nix
index 63cd1dd..18cdb4f 100644
--- a/module.nix
+++ b/module.nix
@@ -1,141 +1,153 @@
-{config, lib, pkgs, ...}:
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
 let
 
   cfg = config.services.mail-quota-warning;
 
-in 
-  {
+in
+{
 
-    options = {
-      services.mail-quota-warning = {
+  options = {
+    services.mail-quota-warning = {
 
-        enable = lib.mkOption {
-          type = lib.types.bool;
-          default = false;
-          description = ''
-            Enable mail-quota-warning daemon.
-          '';
-        };
+      enable = lib.mkOption {
+        type = lib.types.bool;
+        default = false;
+        description = ''
+          Enable mail-quota-warning daemon.
+        '';
+      };
 
-        settings = lib.mkOption {
-          type = lib.types.submodule {
-            freeformType = with lib.types; attrsOf anything;
-            options = {
-              CHECK_INTERVAL_DAYS = lib.mkOption {
-                default = 7;
-                type = lib.types.int;
-                description = ''
-                  Interval of days in which a warning message will be
-                  delivered.
-                '';
-              };
-              QUOTA_WARNING_THRESHOLD_PERCENT = lib.mkOption {
-                default = 80;
-                type = lib.types.int;
-                description = ''
-		              Threshold of used mailbox space in percent after which
-                  a warning message will be delivered.
-                '';
-              };
-	    };
+      settings = lib.mkOption {
+        type = lib.types.submodule {
+          freeformType = with lib.types; attrsOf anything;
+          options = {
+            CHECK_INTERVAL_DAYS = lib.mkOption {
+              default = 7;
+              type = lib.types.int;
+              description = ''
+                Interval of days in which a warning message will be
+                delivered.
+              '';
+            };
+            QUOTA_WARNING_THRESHOLD_PERCENT = lib.mkOption {
+              default = 80;
+              type = lib.types.int;
+              description = ''
+                Threshold of used mailbox space in percent after which
+                a warning message will be delivered.
+              '';
+            };
           };
-          default = {};
-          description = ''
-            Extra options which should be used by the mailbox quota warning script.
-          '';
-          example = lib.literalExpression ''
-            {
-              CHECK_INTERVAL_DAYS = 7;
-    	        QUOTA_WARNING_THRESHOLD_PERCENT = 80;
-            }
-          '';
         };
-
-        secretFile = lib.mkOption {
-          type = with lib.types; listOf path;
-          description = ''
-            A list of files containing the various secrets. Should be in the
-            format expected by systemd's `EnvironmentFile` directory.
-          '';
-          default = [ ];
-        };
-
-        interval = lib.mkOption {
-          type = lib.types.str;
-          default = "*:00,30:00";
-          description = ''
-            How often we run the sync. Default is half an hour.
-  
-            The format is described in
-            {manpage}`systemd.time(7)`.
-          '';
-        };
-
-      };
-    };
-
-    config = lib.mkIf cfg.enable {
-
-      systemd.services."mail-quota-warning" = {
-        description = "mail-quota-warning script";
-        after = [ "network.target" ];
-        wants = [ "network-online.target" ];
-        environment = {
-	  PYTHONUNBUFFERED = "1";
-	} // lib.mapAttrs (_: v: toString v) cfg.settings;
-        serviceConfig = {
-	  Type = "simple";
-          ExecStart = lib.getExe pkgs.mail-quota-warning;
-
-          # hardening
-          AmbientCapabilities = "";
-          CapabilityBoundingSet = "" ;
-          DevicePolicy = "closed";
-          DynamicUser = true;
-          LockPersonality = true;
-          MemoryDenyWriteExecute = true;
-          NoNewPrivileges = true;
-          PrivateDevices = true;
-          PrivateTmp = true;
-          PrivateUsers = true;
-          ProcSubset = "pid";
-          ProtectClock = true;
-          ProtectControlGroups = true;
-          ProtectHome = true;
-          ProtectHostname = true;
-          ProtectKernelLogs = true;
-          ProtectKernelModules = true;
-          ProtectKernelTunables = true;
-          ProtectProc = "invisible";
-          ProtectSystem = "strict";
-          RemoveIPC = true;
-          RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];
-          RestrictNamespaces = true;
-          RestrictRealtime = true;
-          RestrictSUIDSGID = true;
-          SystemCallArchitectures = "native";
-          SystemCallFilter = [ "@system-service" "~@privileged" ];
-          UMask = "0077";
-        } // lib.optionalAttrs (cfg.secretFile != [ ]) {
-	  EnvironmentFile = cfg.secretFile;
-	};
+        default = { };
+        description = ''
+          Extra options which should be used by the mailbox quota warning script.
+        '';
+        example = lib.literalExpression ''
+          {
+            CHECK_INTERVAL_DAYS = 7;
+            QUOTA_WARNING_THRESHOLD_PERCENT = 80;
+          }
+        '';
       };
 
-      systemd.timers.mail-quota-warning = {
-        timerConfig = {
-          OnCalendar = [
-            ""
-            cfg.interval
-          ];
-        };
-        wantedBy = [ "timers.target" ];
+      secretFile = lib.mkOption {
+        type = with lib.types; listOf path;
+        description = ''
+          A list of files containing the various secrets. Should be in the
+          format expected by systemd's `EnvironmentFile` directory.
+        '';
+        default = [ ];
+      };
+
+      interval = lib.mkOption {
+        type = lib.types.str;
+        default = "*:00,30:00";
+        description = ''
+          How often we run the sync. Default is half an hour.
+
+          The format is described in
+          {manpage}`systemd.time(7)`.
+        '';
       };
 
     };
+  };
 
-    meta = {
-      maintainers = with lib.maintainers; [ onny ];
+  config = lib.mkIf cfg.enable {
+
+    systemd.services."mail-quota-warning" = {
+      description = "mail-quota-warning script";
+      after = [ "network.target" ];
+      wants = [ "network-online.target" ];
+      environment = {
+        PYTHONUNBUFFERED = "1";
+      }
+      // lib.mapAttrs (_: v: toString v) cfg.settings;
+      serviceConfig = {
+        Type = "simple";
+        ExecStart = lib.getExe pkgs.mail-quota-warning;
+
+        # hardening
+        AmbientCapabilities = "";
+        CapabilityBoundingSet = "";
+        DevicePolicy = "closed";
+        DynamicUser = true;
+        LockPersonality = true;
+        MemoryDenyWriteExecute = true;
+        NoNewPrivileges = true;
+        PrivateDevices = true;
+        PrivateTmp = true;
+        PrivateUsers = true;
+        ProcSubset = "pid";
+        ProtectClock = true;
+        ProtectControlGroups = true;
+        ProtectHome = true;
+        ProtectHostname = true;
+        ProtectKernelLogs = true;
+        ProtectKernelModules = true;
+        ProtectKernelTunables = true;
+        ProtectProc = "invisible";
+        ProtectSystem = "strict";
+        RemoveIPC = true;
+        RestrictAddressFamilies = [
+          "AF_INET"
+          "AF_INET6"
+        ];
+        RestrictNamespaces = true;
+        RestrictRealtime = true;
+        RestrictSUIDSGID = true;
+        SystemCallArchitectures = "native";
+        SystemCallFilter = [
+          "@system-service"
+          "~@privileged"
+        ];
+        UMask = "0077";
+      }
+      // lib.optionalAttrs (cfg.secretFile != [ ]) {
+        EnvironmentFile = cfg.secretFile;
+      };
     };
 
-  }
+    systemd.timers.mail-quota-warning = {
+      timerConfig = {
+        OnCalendar = [
+          ""
+          cfg.interval
+        ];
+      };
+      wantedBy = [ "timers.target" ];
+    };
 
+  };
+
+  meta = {
+    maintainers = with lib.maintainers; [ onny ];
+  };
+
+}