diff --git a/database/migrations/2024_07_09_141535_drop_unicity_from_customer_emails.php b/database/migrations/2024_07_09_141535_drop_unicity_from_customer_emails.php
new file mode 100644
index 0000000..71b2fe1
--- /dev/null
+++ b/database/migrations/2024_07_09_141535_drop_unicity_from_customer_emails.php
@@ -0,0 +1,30 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class DropUnicityFromCustomerEmails extends Migration {
+	/**
+	 * Run the migrations.
+	 *
+	 * @return void
+	 */
+	public function up() {
+		Schema::table('emails', function (Blueprint $table) {
+			$table->dropUnique(['email']);
+		});
+	}
+
+	/**
+	 * Reverse the migrations.
+	 *
+	 * @return void
+	 */
+	public function down() {
+		Schema::table('emails', function (Blueprint $table) {
+			// TODO: Remove all duplicated e-mails.
+			$table->unique('email');
+		});
+	}
+}