Send welcome email with voucher to user upon successful verification of customer email adddress

database/migrations/2024_03_08_135259_create_key_value_pairs_table.php

@@ -0,0 +1,37 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateKeyValuePairsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('key_value_pairs', function (Blueprint $table) {
+            $table->id();
+            $table->string('owner_type'); //'user', 'order', 'transaction'
+            $table->unsignedBigInteger('owner_id');
+            $table->string('key');
+            $table->string('value');
+            $table->timestamps();
+
+            $table->index(['owner_type', 'owner_id']);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('key_value_pairs');
+    }
+}