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License & Subscription Issues

Can Microsoft 365 Family Increase Hotmail Email Storage?

Chanuka GeekiyanageChanuka Geekiyanage Oct 20, 2026 868 views

Question details

The user wants to know if their Microsoft 365 Family subscription's 1 TB OneDrive allowance can be used to expand a full Hotmail mailbox.

How to Increase Hotmail Storage using Microsoft 365 Family
Product
Microsoft 365
Device & OS
not provided
Scenario
A decade-old Hotmail account has reached its maximum storage capacity, and the user wants to increase it using an existing Microsoft 365 Family plan.
Observed behavior
The account has stopped receiving new emails due to hitting the storage limit, requiring an expansion of the Outlook.com/Hotmail mailbox capacity.
Before you start

Before making changes, verify that your Hotmail account is active and does not already have an individual Microsoft 365 Personal subscription tied to it.

Solution 1Recommended

Add the Hotmail Account to Your Microsoft 365 Family Plan

Sharing your Microsoft 365 Family subscription with your Hotmail account will automatically upgrade its Outlook.com mailbox storage limit to 50 GB.

While the 1 TB storage allowance is exclusively for OneDrive cloud files and cannot be directly converted into email storage, being part of a Microsoft 365 Family plan upgrades your connected email account from the free 15 GB tier to a premium 50 GB capacity.

1
Log into your primary Microsoft account

Sign in to the Microsoft account that actively holds the Microsoft 365 Family subscription.

2
Navigate to the sharing dashboard

Go to your Microsoft account portal and select the 'Sharing' tab or access the Family Safety dashboard.

3
Invite your Hotmail account

Click on 'Invite a family member' and enter the email address of your full Hotmail account to send a sharing invitation.

4
Accept the invitation

Log into your Hotmail account, open the invitation email, and accept it to successfully link the subscription to your inbox.

5
Verify your new storage limits

Go to Outlook.com settings > General > Storage to confirm your mailbox capacity has successfully increased to 50 GB.

Add the Hotmail Account to Your Microsoft 365 Family Plan
Storage Limits Explained: Keep in mind that the 50 GB limit is for email (Outlook.com/Hotmail) only, whereas the 1 TB limit applies separately to your OneDrive cloud files.
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Frequently Asked Questions

Why did my Hotmail stop receiving emails?

Hotmail accounts stop receiving new messages when the mailbox reaches its storage limit, which is typically 15 GB for free accounts. You must either delete old emails or upgrade your storage to resume receiving messages.

Can I use my 1 TB OneDrive storage for my Hotmail emails?

No, the 1 TB storage included in Microsoft 365 Family is dedicated strictly to OneDrive cloud files. However, premium accounts automatically receive a separate 50 GB allowance specifically for mailbox storage.

How do I check my current Hotmail storage usage?

Log into Outlook.com, click the Settings gear icon in the top right, navigate to the General tab, and select Storage. Here you can view a detailed breakdown of your email and cloud space usage.

Does Microsoft 365 Personal also increase Hotmail storage?

Yes, subscribing to a Microsoft 365 Personal plan will also automatically upgrade your associated Outlook.com or Hotmail mailbox limit to 50 GB.