Outlook storage

Question

Outlook storage

Daniel McCarthy 0

Hi my outlook email address is currently asking me to upgrade to more storage. I have a subscription (365 personal) account which I understood outlook is part of that package and covered under 1T storage.

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John Jefferson Doyon 86,980 Reputation points Independent Advisor

2026-08-09T19:14:08.6433333+00:00
Hi,

Your Microsoft 365 Personal subscription should increase your Outlook.com mailbox allowance, but the 1 TB storage is mainly for OneDrive.

To narrow this down:

When you see the upgrade message, does it specifically say your email storage is full, or your Microsoft/OneDrive storage is full?

Is the Microsoft 365 Personal subscription showing as active under the same Microsoft account/email address you use for Outlook?

If possible, could you share a screenshot of the storage warning, but please hide your email address or any personal information?

Thanks!

2 answers

Your answer

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John Jefferson Doyon 86,980 Reputation points Independent Advisor

2026-08-09T19:14:08.6433333+00:00

Hi,

Your Microsoft 365 Personal subscription should increase your Outlook.com mailbox allowance, but the 1 TB storage is mainly for OneDrive.

To narrow this down:

When you see the upgrade message, does it specifically say your email storage is full, or your Microsoft/OneDrive storage is full?

Is the Microsoft 365 Personal subscription showing as active under the same Microsoft account/email address you use for Outlook?

If possible, could you share a screenshot of the storage warning, but please hide your email address or any personal information?

Thanks!

Answer 1

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Answer 2

Microsoft 365 Personal includes 1 TB of OneDrive cloud storage, but Outlook.com mailbox storage is 100 GB, not 1 TB.

What to check:

Open the Microsoft storage area of the account dashboard to confirm the quota on the account that has the subscription.
In Outlook.com, open Settings and search for Storage to see how much mailbox storage is being used and whether the warning is for:
- Email storage (mailbox), or
- Microsoft cloud storage / OneDrive
If the subscription was purchased very recently, the increased storage may not appear immediately. For storage upgrades, it can take up to 24–48 hours for the new quota to show.
If the mailbox is already near the limit, note that consumer mailbox storage is capped at 100 GB. More OneDrive storage does not increase the Outlook.com mailbox beyond that.

What this means:

Free account: 15 GB mailbox + 5 GB cloud storage
Microsoft 365 Personal: 100 GB Outlook.com mailbox + 1 TB OneDrive storage
If the warning is about OneDrive/Microsoft storage being full, Outlook.com can also stop sending and receiving mail until the cloud storage is back under quota.

If the subscription is active but Outlook.com still shows the wrong limit after 48 hours, contact Microsoft support from Outlook.com by selecting Help on the menu bar and using Still need help?, or use the public support contact option.