How to Increase Mail Attachments Size in Office 365 Exchange Online?

Office 365 is a cloud-based email platform developed by Microsoft. It provides many more advanced facilities compare with other email clients. The user can easily operate and access exchange online on any device. It gives high security and technical support for the user, which helps to secure the user’s data. For this reason, many users and companies are switching their accounts in O365.

The default size of Office 365 mailbox message size is 150 MB before it was only 25 to 35 MB. However, 150 MB is not enough size for the user to send and receive the data to other users with attachments so the user needs to Increase Mail Attachment Size in Office 365 to send and receive the data easily and completely without any issue.

Method to Increase mail attachments size

To increase the mail attachment size in Office 365 there are two methods, one is the Exchange Online Admin Centre and another one is by using Powershell. Both methods are easy to increase the mail attachment size in exchange online.

Exchange Online Admin Centre (EAC)- In Office 365

If the user wants to increase the mail attachment size by using Exchange Online Admin Center then follow these steps-

First, log in to your Office 365 account and select on Admin Center option then click on the Exchange option.
In the Exchange Admin center window, click on the Recipients section and then click on the Mailboxes option. Now click on the Mailflow Setting and choose on set default message size restrictions option.

Open, Set the default message size restriction dialogue box the user can fill in the maximum size limit for sent and received messages then click on the Save button.

You can also change a particular user mail size by clicking on it. Select User > Mailbox > Manage Message Size Restriction
Now change the sending and receiving message size then click on the Save button.

Following these steps of the Exchange Admin center, the user can easily expand the size of the mailbox attachments.

By using Powershell Command

The user can also increase the mail attachment size by using the Powershell command. To increase mail attachment size by using Powershell follow these steps and commands-

Firstly, Connect the Powershell to the cloud platform and log in with the Office 365 Admin account by using the given command.
```
$Cred = Get-Credential
```

$Session=New-PSSession –ConfigurationName Microsoft.Exchange –ConnectionUri https://ps.outlook.com/powershell/ -Credential $Cred –Authentication Basic –AllowRedirection

Now Run the below command to import the PS Session to O365
```
Import-PSSession $Session
```

Now, Set the Office 365 attachment size limit for a single mailbox, you need to run the following command.

Set-Mailbox “admin id of Office 365 account” -ProhibitSendQuota 18GB -ProhibitSendReceiveQuota 19GB -IssueWarningQuota 20GB

Then, the Current list of quotas is attached to the mailbox.
```
Get-Mailbox “Admin user ID” | Select *quota
```

To set the maximum limit of the size of multiple mailboxes at once using the command.

Get-Mailbox | Set-Mailbox -ProhibitSendQuota 19GB -ProhibitSendReceiveQuota 20GB -IssueWarningQuota 18GB

By using these commands, the user can easily increase the mail attachment size of Exchange Online.

Conclusion

I have given very easy methods to increase the size of mail attachments from Office 365. By using both methods, the user can easily increase the mail attachment size. If you have, any questions related to this then you can leave a message in the comment box provided below.

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