diff --git a/database/migrations/2024_07_10_162710_drop_emails_on_customers_deletion.php b/database/migrations/2024_07_10_162710_drop_emails_on_customers_deletion.php
new file mode 100644
index 0000000..7e15675
--- /dev/null
+++ b/database/migrations/2024_07_10_162710_drop_emails_on_customers_deletion.php
@@ -0,0 +1,41 @@
+<?php
+/*
+ SPDX-License-Identifier: AGPL-3.0-only
+ SPDX-FileCopyrightText: © 2024 Millions Missing FRANCE <info@millionsmissing.fr>
+ */
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+use Symfony\Component\Console\Output\ConsoleOutput;
+use MillionsMissingFrance\FreescoutRestrictedCustomers\Customer;
+
+class DropEmailsOnCustomersDeletion extends Migration {
+	/**
+	 * Run the migrations.
+	 *
+	 * @return void
+	 */
+	public function up() {
+		Schema::table('emails', function (Blueprint $table) {
+			// Ensure emails entries are dropped when the related customer entry is deleted.
+			$table
+				->foreign('customer_id')
+				->references('id')
+				->on('customers')
+				->onDelete('cascade');
+		});
+	}
+
+	/**
+	 * Reverse the migrations.
+	 *
+	 * @return void
+	 */
+	public function down() {
+		Schema::table('emails', function (Blueprint $table) {
+			// Drop the foreign key constraint.
+			$table->dropForeign(['customer_id']);
+		});
+	}
+}
diff --git a/database/migrations/2024_07_09_141535_drop_unicity_from_customer_emails.php b/database/migrations/2024_07_10_162728_drop_unicity_from_customer_emails.php
similarity index 82%
rename from database/migrations/2024_07_09_141535_drop_unicity_from_customer_emails.php
rename to database/migrations/2024_07_10_162728_drop_unicity_from_customer_emails.php
index 71b2fe1..329fa11 100644
--- a/database/migrations/2024_07_09_141535_drop_unicity_from_customer_emails.php
+++ b/database/migrations/2024_07_10_162728_drop_unicity_from_customer_emails.php
@@ -1,4 +1,8 @@
 <?php
+/*
+ SPDX-License-Identifier: AGPL-3.0-only
+ SPDX-FileCopyrightText: © 2024 Millions Missing FRANCE <info@millionsmissing.fr>
+ */
 
 use Illuminate\Support\Facades\Schema;
 use Illuminate\Database\Schema\Blueprint;
diff --git a/database/migrations/2024_07_10_161855_add_user_id_column_to_customers_table.php b/database/migrations/2024_07_10_162735_add_mailbox_id_column_to_customers_table.php
similarity index 100%
rename from database/migrations/2024_07_10_161855_add_user_id_column_to_customers_table.php
rename to database/migrations/2024_07_10_162735_add_mailbox_id_column_to_customers_table.php