---
title: "MS Outlook - Check Mailbox Size Limit in Classic Outlook"
slug: "ms-outlook-check-mailbox-size-limit-in-classic-outlook"
tags: ["calltower", "public"]
updated: 2026-09-18T16:15:24Z
published: 2026-09-18T16:15:24Z
canonical: "learn.calltower.com/ms-outlook-check-mailbox-size-limit-in-classic-outlook"
---

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# MS Outlook - Check Mailbox Size Limit in Classic Outlook

## All Troubleshooting steps / How To:

1. Open Classic Outlook client (from new Outlook: click on Help and then Go to Classic Outlook)
2. Select File
3. Next halfway down the page it will list the size of the outlook mailbox and what has been used. ![Capture.PNG](https://cdn.us.document360.io/4662144b-ab1f-4796-8b7b-e9f9c609894f/Images/Documentation/Capture(6).PNG?sv=2026-02-06&spr=https&st=2026-11-05T03%3A43%3A13Z&se=2026-11-05T04%3A43%3A13Z&sr=c&sp=r&sig=lq6UkLru7spMPEsD2mOV9nF%2Fx5dj92ZjQh4d63Gn99s%3D)