diff --git a/app/Console/Commands/MarkTimeoutMail.php b/app/Console/Commands/MarkTimeoutMail.php
new file mode 100644
index 0000000..6256aa7
--- /dev/null
+++ b/app/Console/Commands/MarkTimeoutMail.php
@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Console\Commands;
+
+use App\Models\Mail;
+use Illuminate\Console\Command;
+use Illuminate\Support\Carbon;
+
+class MarkTimeoutMail extends Command
+{
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'app:mark-timeout-mail';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = '标记超时未读邮件';
+
+    /**
+     * Execute the console command.
+     */
+    public function handle()
+    {
+        //
+        Mail::where([
+            ['created_at', "<=", Carbon::now()->subSeconds(300)],
+            ['is_read', '=', 0],
+        ])->update([
+            'is_read' => 1,
+        ]);
+    }
+}
diff --git a/app/Console/Kernel.php b/app/Console/Kernel.php
index e6b9960..8457aa0 100644
--- a/app/Console/Kernel.php
+++ b/app/Console/Kernel.php
@@ -12,7 +12,7 @@ class Kernel extends ConsoleKernel
      */
     protected function schedule(Schedule $schedule): void
     {
-        // $schedule->command('inspire')->hourly();
+        $schedule->command('app:mark-timeout-mail')->minutely();
     }
 
     /**
@@ -20,7 +20,7 @@ protected function schedule(Schedule $schedule): void
      */
     protected function commands(): void
     {
-        $this->load(__DIR__.'/Commands');
+        $this->load(__DIR__ . '/Commands');
 
         require base_path('routes/console.php');
     }
diff --git a/app/Http/Controllers/MailController.php b/app/Http/Controllers/MailController.php
index 359170e..9f7b6f3 100644
--- a/app/Http/Controllers/MailController.php
+++ b/app/Http/Controllers/MailController.php
@@ -2,13 +2,13 @@
 
 namespace App\Http\Controllers;
 
+use App\Http\Controllers\Controller;
 use App\Models\Mail;
-use Illuminate\Support\Str;
 use Illuminate\Http\Request;
 use Illuminate\Support\Carbon;
-use App\Http\Controllers\Controller;
 use Illuminate\Support\Facades\Crypt;
 use Illuminate\Support\Facades\Validator;
+use Illuminate\Support\Str;
 
 class MailController extends Controller
 {
@@ -17,8 +17,8 @@ public function index(Request $request)
     {
         $domain_list  = config('mail.domain_list');
         $block_prefix = config('mail.block_prefix');
-        $rand_prefix  = Str::random(8);
-        $key          = Crypt::encryptString(json_encode(['id' => 0, 'time' => time()]));
+        $rand_prefix  = strtolower(Str::random(8));
+        $key          = Crypt::encryptString(json_encode(['time' => time()]));
         return view('welcome', [
             'domain_list'  => $domain_list,
             'block_prefix' => $block_prefix,
@@ -64,20 +64,26 @@ function ($attribute, $value, $fail) {
             return abort(400);
         }
 
-        $where   = [];
-        $to_hash = hash('sha256', $email);
-        $where[] = ['to_hash', '=', $to_hash];
+        $where = [
+            'to_hash' => hash('sha256', $email),
+            'is_read' => 0,
+        ];
+        // $to_hash = hash('sha256', $email);
+        // $where[] = ['to_hash', '=', $to_hash];
 
         try {
             $key = Crypt::decryptString($key);
             $key = json_decode($key, true);
-            if (!empty($key['id'])) {
-                $where[] = ['id', '>', $key['id']];
-            } elseif (time() - $key['time'] < 300) {
-                $where[] = ['received_at', '>', Carbon::parse($key['time'])];
-            } else {
-                $where[] = ['received_at', '>', Carbon::now()->subSeconds(60)];
+            if (time() - $key['time'] > 300) {
+                throw new Exception("The token has expired.", 400);
             }
+            // if (!empty($key['id'])) {
+            //     $where[] = ['id', '>', $key['id']];
+            // } elseif (time() - $key['time'] < 300) {
+            //     $where[] = ['received_at', '>', Carbon::parse($key['time'])];
+            // } else {
+            //     $where[] = ['received_at', '>', Carbon::now()->subSeconds(60)];
+            // }
         } catch (\Throwable $th) {
             return abort(400, $th->getMessage());
         }
@@ -94,10 +100,7 @@ function ($attribute, $value, $fail) {
             ->orderBy('received_at', 'asc')
             ->get();
 
-        $key = ['id' => $key['id'], 'time' => time()];
-        if ($new_email_list->count() > 0) {
-            $key['id'] = $new_email_list->last()->key;
-        }
+        $key = ['time' => time()];
 
         foreach ($new_email_list as $value) {
             $value->key = Crypt::encryptString($value->key);
@@ -142,6 +145,7 @@ public function put(Request $request)
         $mail->from_addr     = $from_addr;
         $mail->from_protocol = $from_protocol;
         $mail->received_at   = Carbon::parse($received_at);
+        $mail->is_read       = 0;
         $mail->save();
 
         return response()->json([
@@ -168,6 +172,9 @@ public function info(Request $request, $key)
             return abort(404);
         }
 
+        $mail_info->is_read = 1;
+        $mail_info->save();
+
         $title = str_replace(["\n", "\r", "\t"], '', strip_tags($mail_info->title));
         $body  = preg_replace('/<script\b[^>]*>(.*?)<\/script>/is', "", $mail_info->body);
 
diff --git a/database/migrations/2024_06_02_043733_add_is_read_into_mail_table.php b/database/migrations/2024_06_02_043733_add_is_read_into_mail_table.php
new file mode 100644
index 0000000..37d7ebb
--- /dev/null
+++ b/database/migrations/2024_06_02_043733_add_is_read_into_mail_table.php
@@ -0,0 +1,26 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('mails', function (Blueprint $table) {
+            $table->unsignedTinyInteger('is_read')->default(0)->index();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        $table->dropColumn('is_read');
+    }
+};
diff --git a/resources/views/welcome.blade.php b/resources/views/welcome.blade.php
index e313d0d..1b8063c 100644
--- a/resources/views/welcome.blade.php
+++ b/resources/views/welcome.blade.php
@@ -7,7 +7,7 @@
     <meta name="csrf-token" content="{{ csrf_token() }}">
 
     <title>{{config('app.name')}}</title>
-    <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet">
+    <link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet">
     <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.3/css/all.min.css" rel="stylesheet">
     <link href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.13/css/select2.min.css" rel="stylesheet" />
 
@@ -192,7 +192,7 @@
 
     <script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
-    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.13/js/select2.min.js"></script>
     <script src="https://cdn.jsdelivr.net/npm/clipboard@2.0.11/dist/clipboard.min.js"></script>
 
@@ -209,7 +209,7 @@
 
         function isValidDomain(domain) {
             console.log(domain);
-            var pattern = /^(?!:\/\/)([a-zA-Z0-9-]+\.)*[a-zA-Z0-9-]+\.[a-zA-Z]{2,11}$/;
+            var pattern = /^(?!:\/\/)([a-z0-9-]+\.)*[a-z0-9-]+\.[a-z]{2,11}$/;
             return pattern.test(domain);
         }
 
@@ -308,6 +308,7 @@ function fetchMail() {
             });
 
             $('#inputText').on('change keyup', function () {
+                this.value = this.value.toLowerCase().replace(/[^a-z0-9]/g, '');
                 let textLength = $('#inputText').val().length;
                 if (textLength < 5 || textLength > 32) {
                     $('#inputText').addClass('is-invalid');
@@ -409,7 +410,6 @@ function fetchMail() {
                             $('#myModal').modal('show');
 
 
-
                         } catch (e) {
                             console.error('Error parsing API response or decoding base64:', e);
                         }
@@ -424,4 +424,4 @@ function fetchMail() {
     </script>
 </body>
 
-</html>
\ No newline at end of file
+</html>