// database/migrations/xxxx_create_contact_messages_table.php
public function up()
{
    Schema::create('contact_messages', function (Blueprint $table) {
        $table->id();
        $table->string('name');
        $table->string('email');
        $table->string('subject');
        $table->text('message');
        $table->boolean('is_read')->default(false);
        $table->timestamps();
    });
}