diff --git a/includes/class-settings.php b/includes/class-settings.php
new file mode 100644
index 0000000..6a340dc
--- /dev/null
+++ b/includes/class-settings.php
@@ -0,0 +1,79 @@
+<?php
+declare(strict_types=1);
+
+namespace Cf7stg;
+
+final class Settings
+{
+    public const OPT_BOT_TOKEN   = 'cf7stg_bot_token_enc';
+    public const OPT_CHAT_ID     = 'cf7stg_chat_id';
+    public const OPT_SITE_TITLE  = 'cf7stg_site_title';
+    public const OPT_LAST_TEST   = 'cf7stg_last_test';
+
+    public static function get_bot_token(): string
+    {
+        if (defined('SPAM2TG_BOT_TOKEN') && SPAM2TG_BOT_TOKEN !== '') {
+            return (string)SPAM2TG_BOT_TOKEN;
+        }
+        $enc = (string)get_option(self::OPT_BOT_TOKEN, '');
+        $dec = Crypto::decrypt($enc);
+        return $dec ?? '';
+    }
+
+    public static function is_bot_token_constant(): bool
+    {
+        return defined('SPAM2TG_BOT_TOKEN') && SPAM2TG_BOT_TOKEN !== '';
+    }
+
+    public static function set_bot_token(string $plaintext): void
+    {
+        update_option(self::OPT_BOT_TOKEN, Crypto::encrypt($plaintext));
+    }
+
+    public static function get_chat_id(): string
+    {
+        if (defined('SPAM2TG_CHAT_ID') && SPAM2TG_CHAT_ID !== '') {
+            return (string)SPAM2TG_CHAT_ID;
+        }
+        return (string)get_option(self::OPT_CHAT_ID, '');
+    }
+
+    public static function is_chat_id_constant(): bool
+    {
+        return defined('SPAM2TG_CHAT_ID') && SPAM2TG_CHAT_ID !== '';
+    }
+
+    public static function set_chat_id(string $chat_id): void
+    {
+        update_option(self::OPT_CHAT_ID, $chat_id);
+    }
+
+    public static function get_site_title(): string
+    {
+        $override = trim((string)get_option(self::OPT_SITE_TITLE, ''));
+        if ($override !== '') return $override;
+        $host = parse_url(home_url(), PHP_URL_HOST) ?: '';
+        return DomainFormatter::humanize((string)$host);
+    }
+
+    public static function set_site_title(string $title): void
+    {
+        update_option(self::OPT_SITE_TITLE, trim($title));
+    }
+
+    public static function get_last_test(): array
+    {
+        $v = get_option(self::OPT_LAST_TEST, []);
+        return is_array($v) ? $v : [];
+    }
+
+    public static function set_last_test(array $v): void
+    {
+        update_option(self::OPT_LAST_TEST, $v);
+    }
+
+    public static function is_configured(): bool
+    {
+        return self::get_bot_token() !== '' && self::get_chat_id() !== '';
+    }
+}