diff --git a/app/Models/User.php b/app/Models/User.php
index 535b158..7508cdd 100644
--- a/app/Models/User.php
+++ b/app/Models/User.php
@@ -158,7 +158,7 @@ public function user_group(): BelongsTo
 
     public function scopeBirthday()
     {
-        return $this->select(['id', 'name', 'birthday_at', 'email', 'created_at'])->whereMonth('birthday_at', now()->month)
+        return $this->select(['id', 'name', 'birthday_at', 'email_md5', 'created_at'])->whereMonth('birthday_at', now()->month)
             ->whereDay('birthday_at', now()->day);
     }
 }
diff --git a/app/Models/WorkOrder/Reply.php b/app/Models/WorkOrder/Reply.php
index 59e2f91..6612d18 100644
--- a/app/Models/WorkOrder/Reply.php
+++ b/app/Models/WorkOrder/Reply.php
@@ -149,7 +149,7 @@ public function scopeWorkOrderId($query, $work_order_id)
     public function scopeWithUser($query)
     {
         return $query->with(['user' => function ($query) {
-            $query->select('id', 'name', 'email');
+            $query->select('id', 'name', 'email_md5');
         }]);
     }
 }
diff --git a/database/migrations/2023_01_02_220622_add_email_md5_to_users_table.php b/database/migrations/2023_01_02_220622_add_email_md5_to_users_table.php
new file mode 100644
index 0000000..2c3fd76
--- /dev/null
+++ b/database/migrations/2023_01_02_220622_add_email_md5_to_users_table.php
@@ -0,0 +1,45 @@
+<?php
+
+use App\Models\User;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration {
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up(): void
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->string('email_md5')->after('email')->nullable()->comment('邮箱 MD5');
+        });
+
+        $count = User::count();
+        $i = 0;
+
+        User::chunk(100, function ($users) use (&$i, $count) {
+            foreach ($users as $user) {
+
+                echo sprintf('Updating %d/%d', ++$i, $count) . PHP_EOL;
+
+                $user->email_md5 = md5($user->email);
+                $user->saveQuietly();
+            }
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down(): void
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->dropColumn('email_md5');
+        });
+    }
+};