How to Increase Office 365 Mailbox Size - The Complete Guide

# How to Increase Office 365 Mailbox Size - A Step-By-Step Solution **Summary:** Office 365 mailbox has a mailbox size limit as per the plans. The E1 plan has only 50 GB of mailbox which is not enough. Therefore, here you will find how to increase Office 365 mailbox size efficiently. As per the requirement of the organizations Office 365 is used at an alarming rate. It helps organizations with their seamless workflow. All the communication with the clients or customers is performed with the help of emails. Due to this vast usage of emails, the mailbox size of Office 365 is completely filled and there is no space for other emails. Because the Office 365 E1 plan, it is only providing 50 GB of space which is not enough. Let’s find out the reasons to expand the Office 365 mailbox. ## Why Expand Office 365 Mailbox Size? There are several reasons why you need to expand the size of your Office 365 mailbox. Some of the key reasons are - 1. **Store Important Data** - When the mailbox size is getting full, then it is not able to store the other emails, documents, etc. There might be a chance that the incoming data is important. 2. **Data Loss** - If the mailbox is full and you are not able to store other data in it, then you have to delete some data from the mailbox which caused data loss. 3. **Cost-Effective** - If you are storing data in the mailbox then you are not required to use any extra hard drive to store the data. 4. **Productivity** - If the mailbox has more storage, then you do not need to worry about the storage and you can focus on your work. ## How to Increase Office 365 Mailbox Size? There are multiple [Office 365 mailbox types](https://www.office365tips.org/office-365-mailbox-types/) and there are different ways to increase Office 365 mailbox size that can help to achieve more storage in the Office 365 mailbox. ### 1. Expand Office 365 Mailbox Size using PowerShell You need to follow these steps in Powershell to increase the Office365 mailbox size. 1.Run the Windows PowerShell as administrator. 2.Run the $UserCredential = Get-Credential command. 3.Enter the details of the Office 365 account. 4.Create an Exchange Online session and run $Session = New-PSSession -ConfigurationName Microsoft. Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication Basic -AllowRedirection 5.Now run the command to import Exchange Online cmdlets for the local session. Import-PSSession $Session -DisableNameChecking 6.Now run Get-Mailbox < User ID > | Select *quota to get the size limit of the current mailbox. 7.Run the command to increase the size from 50 GB to 100 GB. Set-Mailbox < UserID > -ProhibitSendQuota < Value > -ProhibitSendReceiveQuota < Value > -IssueWarningQuota <Value> ### 2. Upgrading Plan to Expand Office 365 Mailbox Microsoft provides different plans to use its services. As the plan is upgraded, then more storage is allocated to the user. If you are a user of the E1 plan, then you can upgrade your plan from E1 to E2 and the size of the mailbox will increase to 100 GB automatically. You should know [how to create an admin account in Office 365](https://www.office365tips.org/how-to-create-an-admin-account-in-office-365/) if not made earlier. Because it is the responsibility of the Admin to upgrade the plan. ### 3. Increase Office 365 Mailbox by Exporting Office 365 Mailbox to PST Locally One of the efficient approaches is to make the mailbox eligible to store more items. You can go with the expert-recommended Office 365 backup tool. You can store the whole data such as emails, documents, and files in the PST file locally. You do not need to worry about the shared mailboxes. Basically, there are[ Office 365 shared mailbox limitations](https://www.office365tips.org/office-365-shared-mailbox-limitations/) that can create issues while backing up the data. But through this tool, you can save the shared mailboxes into the PST file locally. If some of your data is saved into the In-Place Archive, then you can also able to save it locally by using this tool. You should also follow the [Office 365 backup best practices](https://www.office365tips.org/office-365-backup-best-practices/) for the successful saving of the mailbox data on the local machine. ### Step-By-Step Solution to Save Data Locally 1. Download and run the tool. Select Office 365 as the Source and Outlook as the Destination. 2. Select the required items from the workload and apply the Date Filter. 3. Enter the Source credentials and validate them and Next. 4. Enter the destination details validate them and Next. 5. Add the users by different options such as fetch users, Import users, or download the template option. 6. After fetching the users Click on the Start Backup button. #### Conclusion In this article, we have discussed the most asked query by Office 365 users on how to increase Office 365 mailbox size. We have explained both the manual ways as well as a professional solution which is recommended by the experts You can choose any one which is more relevant to you. Hence you know how to expand Office 365 mailbox size. **For More Resources** Find [is Office 365 better than Google Apps](https://www.office365tips.org/is-office-365-better-than-google-apps/)? [How to add company email signatures in Office 365](https://www.office365tips.org/how-to-add-company-email-signatures-in-office-365/)? How to[ Export Office 365 Archive Mailbox to PST](https://www.office365tips.org/export-office-365-archive-mailboxes-to-pst/)? How to [enable Archive Mailbox in Exchange Online](https://www.office365tips.org/enable-disable-archive-mailbox-in-exchange-online/)?