Are you running out of email storage in your Microsoft 365 Business account? Don't worry! There's a way to increase your mailbox size beyond the standard 50GB limit. In this guide, we'll walk you through the process of expanding your email storage to a whopping 100GB. Let's dive in!
License Requirements for Increased Email Storage
Before we begin, it's important to note that increasing your email storage beyond 50GB requires specific licenses. You'll need one of the following:
- Exchange Online Plan 2
- Microsoft 365 Enterprise E3
- Microsoft 365 Enterprise E5
Make sure you have the appropriate license before proceeding.

Step-by-Step Guide to Increase Your Email Storage
1. Install the Exchange Online PowerShell Module
To modify your mailbox size, you'll need to use PowerShell commands. First, let's install the necessary module:
- Open PowerShell as an administrator
- Run the following command:
[code language="powershell"]
Install-Module -Name ExchangeOnlineManagement
[/code]

2. Connect to Exchange Online Using MFA
Now that we have the module installed, let's connect to Exchange Online:
- In the same PowerShell window, run:
[code language="powershell"]
Connect-ExchangeOnline
[/code]
- Follow the prompts to authenticate using your Microsoft 365 credentials and complete the Multi-Factor Authentication (MFA) process.

3. Increase Your Mailbox Size
With the connection established, you can now increase your mailbox size using the following command:
[code language="powershell"]
Set-Mailbox username@contoso.onmicrosoft.com -ProhibitSendQuota 98GB -ProhibitSendReceiveQuota 99GB -IssueWarningQuota 95GB
[/code]
Replace `username@contoso.onmicrosoft.com` with your actual email address.
Let's break down what each parameter means:
- ProhibitSendQuota: The mailbox size at which you can't send new emails (set to 98GB)
- ProhibitSendReceiveQuota: The mailbox size at which you can't send or receive new emails (set to 99GB)
- IssueWarningQuota:Â The mailbox size at which you'll receive a warning about your storage (set to 95GB)

Verifying the Changes
After running the command, you can verify the changes by using the following PowerShell command:
[code language="powershell"]
Get-Mailbox username@contoso.onmicrosoft.com | Select-Object ProhibitSendQuota,ProhibitSendReceiveQuota,IssueWarningQuota
[/code]
This will display your new mailbox quotas, confirming the increase in storage.
Conclusion
Congratulations! You've successfully increased your email storage in Microsoft 365 Business to 100GB. Remember, this process requires specific licenses and administrative access to your Microsoft 365 environment. If you're not comfortable making these changes yourself, consult with your IT department or a Microsoft 365 specialist.
By following these steps, you can ensure that you have ample space for all your important emails and attachments, boosting your productivity and eliminating the stress of a full mailbox.
Need Expert Help? Contact a Trusted Advisor
While the steps outlined in this guide are straightforward, managing Microsoft 365 environments can be complex, especially for businesses with specific needs or larger-scale operations. If you're unsure about making these changes or want to ensure you're optimizing your Microsoft 365 environment, it's wise to consult with a trusted advisor.
Why Choose TECHIT SERVICES?
We highly recommend contacting us at TECHIT SERVICES for your Microsoft 365 needs. Here's why:
- Microsoft Partners: As certified Microsoft Partners, we at TECHIT SERVICES have direct access to Microsoft resources and support, ensuring you get the most up-to-date and accurate assistance.
- 15+ Years of Experience With over 15 years of experience working with the Microsoft 365 Cloud environment, TECHIT SERVICES we have the expertise to handle even the most complex scenarios.
- Tailored Solutions: Every business is unique. TECHIT SERVICES provides customized solutions aligning with your business needs and goals.
- Ongoing Support: Beyond just increasing your email storage, TECHIT SERVICES offers continuous support and guidance for all aspects of your Microsoft 365 environment.

By partnering with TECHIT SERVICES, you can ensure that your Microsoft 365 environment is not only optimized for today's needs but also prepared for future growth and challenges. Don't hesitate to contact us for expert guidance on increasing your email storage or any other Microsoft 365-related queries.
Contact TECHIT SERVICES today to elevate your Microsoft 365 experience!
Click Here for our contact information; we are ready to help you with your Microsoft 365 Enviroment!

