feat(mailbox): add manage mailbox subscription page MTA-6970

pages/mailbox/how-to/manage-mailbox-subscription.mdx

@@ -0,0 +1,59 @@
+---
+title: How to manage a Mailbox subscription
+description: This page explains how to manage a Mailbox subscription on the Scaleway console.
+tags: mailbox subscription
+dates:
+  validation: 2026-03-09
+  posted: 2026-03-09
+---
+import Requirements from '@macros/iam/requirements.mdx'
+
+<Requirements />
+
+- A Scaleway account logged into the [console](https://console.scaleway.com)
+- [Owner](/iam/concepts/#owner) status or [IAM permissions](/iam/concepts/#permission) allowing you to perform actions in the intended Organization
+- [Created your Mailbox domain](/mailbox/how-to/create-mailbox-domain/) 
+
+## How to change a subscription plan
+
+<Message type="note">
+  When you change a Mailbox account subscription, the new plan begins after the end of the current one.
+</Message>
+
+1. Click **Mailbox** in the **Domains & Web Hosting** section of the [console](https://console.scaleway.com/) side menu. The list of your domains displays.
+2. Click the domain you wish to configure. The list of Mailboxes created for this domain displays.
+3. Click a Mailbox email account to configure. The Mailbox account information displays.
+4. Navigate to the **Settings** tab.
+5. Click **Change commitment period** to change the subscription plan. A pop-up appears.
+5. Select the monthly or annual plan.
+6. Check the box to confirm you understand that you will be billed the price that displays.
+7. Click **Confirm**.
+
+## How to cancel a subscription
+
+<Message type="important">
+  When a Mailbox account subscription is canceled, the account stays active until the planned renewal date. Then, a 30-day pending period begins, during which the Mailbox remains available, but emails cannot be sent or received. At the end of the pending period, the Mailbox is permanently deleted.
+</Message>
+
+1. Click **Mailbox** in the **Domains & Web Hosting** section of the [console](https://console.scaleway.com/) side menu. The list of your domains displays.
+2. Click a Mailbox domain to configure. The list of Mailboxes created for this domain displays.
+3. Click a Mailbox email account to configure. The Mailbox account information displays.
+4. Navigate to the **Settings** tab.
+5. Click **Cancel subscription**.
+6. Type **CANCEL** to confirm.
+7. Click **Cancel subscription**.
+
+## How to reactivate a subscription
+
+A canceled Mailbox account subscription can be reactivated until the end of the pending period of the account.
+
+1. Click **Mailbox** in the **Domains & Web Hosting** section of the [console](https://console.scaleway.com/) side menu. The list of your domains displays.
+2. Click a Mailbox domain to configure. The list of Mailboxes created for this domain displays.
+3. Click a Mailbox email account to configure. A message is displayed indicating that the subscription is currently cancelled for this Mailbox account.
+4. Click **Reactivate**.
+5. Type **RESTORE** to confirm.
+6. Click **Reactivate subscription**.
+
+<Message type="note">
+  When a Mailbox account subscription is canceled, you can also reactivate its subscription by setting a [commitment period](#change-subscription-plan).
+</Message>

pages/mailbox/menu.ts

@@ -26,6 +26,14 @@ export const mailboxMenu = {
           label: 'Configure your Mailbox domain',
           slug: 'configure-mailbox',
         },
+        {
+          label: 'Manage a Mailbox subscription',
+          slug: 'manage-mailbox-subscription',
+        },
+        {
+          label: 'Delete a Mailbox email account',
+          slug: 'delete-mailbox-email-account',
+        },
         {
           label: 'Delete your Mailbox domain',
           slug: 'delete-mailbox-domain',